<PAGE>
                                                                    EXHIBIT 10.3
                                                                  EXECUTION COPY

================================================================================










                         CARMAX AUTO SUPERSTORES, INC.,
                                   as Seller,


                                       and


                        POOLED AUTO SECURITIES SHELF LLC,
                                  as Purchaser





                         ------------------------------

                         RECEIVABLES PURCHASE AGREEMENT

                          Dated as of December 1, 2002

                         ------------------------------











================================================================================




<PAGE>

                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

                                  ARTICLE ONE

                                  DEFINITIONS

Section 1.01.  Definitions.................................................   1
Section 1.02.  Other Definitional Provisions...............................   4

                                  ARTICLE TWO

                           CONVEYANCE OF RECEIVABLES

Section 2.01.  Sale and Conveyance of Receivables..........................   5
Section 2.02.  Receivables Purchase Price; Payments on the Receivables.....   6
Section 2.03.  Transfer of Receivables.....................................   6
Section 2.04.  Examination of Receivable Files.............................   6
Section 2.05.  Expenses....................................................   6

                                 ARTICLE THREE

                         REPRESENTATIONS AND WARRANTIES

Section 3.01.  Representations and Warranties of the Purchaser.............   8
Section 3.02.  Representations and Warranties of CarMax....................   8

                                  ARTICLE FOUR

                                   CONDITIONS

Section 4.01.  Conditions to Obligation of the Purchaser...................  10
Section 4.02.  Conditions to Obligation of the Seller......................  12

                                  ARTICLE FIVE

                            COVENANTS OF THE SELLER

Section 5.01.  Protection of Right, Title and Interest in, to and Under
               the Receivables.............................................  13
Section 5.02.  Security Interests..........................................  14
Section 5.03.  Delivery of Payments........................................  14
Section 5.04.  No Impairment...............................................  14
Section 5.05.  Costs and Expenses..........................................  14


                                       i

<PAGE>


                                                                            Page
                                                                            ----

Section 5.06.  Hold Harmless...............................................  15
Section 5.07.  Merger, Consolidation or Assumption of the Obligations of
               the Seller..................................................  15

                                  ARTICLE SIX

                                INDEMNIFICATION

Section 6.01.  Indemnification.............................................  16

                                 ARTICLE SEVEN

                            MISCELLANEOUS PROVISIONS

Section 7.01.  Amendment...................................................  19
Section 7.02.  Termination.................................................  19
Section 7.03.  Governing Law...............................................  19
Section 7.04.  Notices.....................................................  19
Section 7.05.  Severability of Provisions..................................  20
Section 7.06.  Further Assurances..........................................  20
Section 7.07.  No Waiver; Cumulative Remedies..............................  20
Section 7.08.  Counterparts................................................  20
Section 7.09.  Third-Party Beneficiaries...................................  20
Section 7.10.  Headings and Table of Contents..............................  20
Section 7.11.  Representations, Warranties and Agreements to Survive.......  20
Section 7.12.  No Proceedings..............................................  20
Section 7.13.  Accountant's Letters........................................  21
Section 7.14.  Obligations of Purchaser....................................  21


                                    SCHEDULES

Schedule A - Receivables Schedule..........................................SA-1


                                    EXHIBITS

Exhibit A - Bill of Sale and Assignment.................................... A-1
Exhibit B - Secretary's Certificate of the Seller.......................... B-1
Exhibit C - Opinions of Counsel for the Seller............................. C-1
Exhibit D - Representations and Warranties of Seller....................... D-1
Exhibit E - Form of Retail Installment Sale Contract....................... E-1

                                       ii

<PAGE>


                         RECEIVABLES PURCHASE AGREEMENT

     This Receivables Purchase Agreement, dated as of December 1, 2002, is
between CarMax Auto Superstores, Inc., a Virginia corporation ("CarMax"), as
seller (the "Seller"), and Pooled Auto Securities Shelf LLC, a Delaware limited
liability company ("PASS"), as purchaser.

     WHEREAS, in the regular course of business, the Seller and certain
affiliates of the Seller have originated certain motor vehicle retail
installment sale contracts secured by new and used motor vehicles;

     WHEREAS, the Seller intends to convey all of its right, title and interest
in and to contracts having an aggregate outstanding principal balance of
$500,000,060.80 as of the close of business on November 30, 2002 (the
"Receivables") to the Purchaser and, concurrently with its purchase of the
Receivables, the Purchaser shall convey all of its right, title and interest in
and to the Receivables to CarMax Auto Owner Trust 2002-2, as issuer (the
"Issuer") pursuant to a Sale and Servicing Agreement, dated as of December 1,
2002 (the "Sale and Servicing Agreement"), among the Issuer, PASS, as depositor,
and CarMax, as seller and servicer; and

     WHEREAS, the Seller and the Purchaser wish to set forth the terms pursuant
to which the Receivables are to be sold by the Seller to the Purchaser.

     NOW, THEREFORE, in consideration of the mutual terms and covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

                                   ARTICLE ONE

                                   DEFINITIONS

     Section 1.01. Definitions. Whenever used in this Agreement, the following
                   -----------
words and phrases shall have the following meanings:

     "Agreement" means this Receivables Purchase Agreement and all amendments
      ---------
hereof and supplements hereto.

     "Base Prospectus" means the prospectus, dated November 21, 2002, of the
      ---------------
Purchaser relating to the public offering by the Purchaser of the Securities.

     "Basic Documents" means this Agreement, the Sale and Servicing Agreement,
      ---------------
the Administration Agreement, the Indenture, the Trust Agreement, the Insurance
Agreement, the Indemnification Agreement and any other documents or certificates
delivered in connection herewith or therewith as the same may be amended,
supplemented or otherwise modified and in effect.

     "Bill of Sale" means the Bill of Sale and Assignment, substantially in the
      ------------
form attached hereto as Exhibit A.

<PAGE>

     "CarMax" means CarMax Auto Superstores, Inc., a Virginia corporation, and
      ------
its successors.

     "Closing Date" means December 5, 2002.
      ------------

     "Cutoff Date" means November 30, 2002.
      -----------

     "Delaware Trustee" means The Bank of New York (Delaware), as Delaware
      ----------------
Trustee under the Trust Agreement, and its successors in such capacity.

     "Depositor" means Pooled Auto Securities Shelf LLC, a Delaware limited
      ---------
liability company, as Depositor under the Trust Agreement, and its successors in
such capacity.

     "DTC" means The Depository Trust Company, and its successors.
      ---

     "Exchange Act" means the Securities Exchange Act of 1934, as amended.
      ------------

     "Indemnification Agreement" means the Indemnification Agreement, dated as
      -------------------------
of November 21, 2002, among the Insurer, the Seller, PASS, Wachovia Corporation
and the Underwriters, as amended or supplemented from time to time.

     "Indenture" means the Indenture, dated as of December 1, 2002, between the
      ---------
Issuer and the Indenture Trustee, as amended or supplemented from time to time.

     "Indenture Trustee" means Wells Fargo Bank Minnesota, National Association,
      -----------------
as indenture trustee under the Indenture, and its successors in such capacity.

     "Initial Reserve Account Deposit" means $1,250,000.
      -------------------------------

     "Insurance Agreement" means the Insurance and Reimbursement Agreement,
      -------------------
dated December 5, 2002, among the Insurer, the Depositor, and CarMax, in its
individual capacity, as seller and as servicer, as amended or supplemented from
time to time.

     "Insurance Policy" means the financial guaranty insurance policy, dated the
      ----------------
Closing Date, issued by the Insurer relating to the Securities.

     "Insurer" means MBIA Insurance Corporation, and its successors.
      -------

     "Issuer" means CarMax Auto Owner Trust 2002-2, a Delaware statutory trust.
      ------

     "Owner Trustee" means The Bank of New York, as owner trustee under the
      -------------
Trust Agreement, and its successors in such capacity.

     "PASS" means Pooled Auto Securities Shelf LLC, a Delaware limited liability
      ----
company, and its successors.

     "Prospectus Supplement" means the final prospectus supplement, dated
      ---------------------
November 21, 2002, of the Purchaser relating to the public offering by the
Purchaser of the Securities.

                                       2

<PAGE>

     "Prospectus" means the Prospectus Supplement and the Base Prospectus of the
      ----------
Purchaser relating to the public offering by the Purchaser of the Securities.

     "Purchaser" means PASS, in its capacity as purchaser of the Receivables
      ---------
under this Agreement, and its successors in such capacity.

     "Receivables" means the motor vehicle retail installment sale contracts
      -----------
sold by the Seller to the Purchaser pursuant to this Agreement and identified on
the Receivables Schedule.

     "Receivables Purchase Price" means $497,675,150.30.
      --------------------------

     "Receivables Schedule" means the schedule of receivables attached as
      --------------------
Schedule A hereto, as amended, supplemented or otherwise modified and in effect
from time to time.

     "Representation Date" means each of the date of the Term Sheet, the
      -------------------
Prospectus and the Closing Date.

     "Representative" means Wachovia Securities, Inc., as representative of the
      --------------
Underwriters.

     "Sale and Servicing Agreement" has the meaning given in the recitals.
      ----------------------------

     "SEC" means the Securities and Exchange Commission, and its successors.
      ---

     "Securities" means the Notes and the Certificates.
      ----------

     "Securities Act" means the Securities Act of 1933, as amended.
      --------------

     "Securityholders" means the Noteholders and the Certificateholders.
      ---------------

     "Seller" means CarMax, in its capacity as seller of the Receivables under
      ------
this Agreement, and its successors in such capacity.

     "Seller Information" means the information in the Term Sheet (other than
      ------------------
the headings "Tax Status:" and "ERISA Considerations:"), the information in the
Prospectus Supplement (other than the information under the headings "Summary -
Tax Status", "Summary - ERISA Considerations", "The Depositor", "Description of
the Insurer", "Material Federal Income Tax Consequences", "ERISA
Considerations", "Underwriting" and "Annex I - Global Clearance, Settlement and
Tax Documentation Procedures"), and the information in the Base Prospectus under
the heading "Material Legal Issues Relating to the Receivables".

     "State" means any of the 50 states of the United States of America or the
      -----
District of Columbia.

     "Term Sheet" means the term sheet and computational materials prepared by
      ----------
CarMax dated November 18, 2002, as amended and superceded in its entirety by the
term sheet and computational materials dated November 21, 2002, that were in
each case filed with the Commission within two business days of their first use.

                                       3

<PAGE>

     "Trust Agreement" means the trust agreement, dated as of October 15, 2002,
      ---------------
among PASS, the Delaware Trustee and the Owner Trustee and as amended and
restated by the Amended and Restated Trust Agreement, dated as of December 1,
2002 among PASS, the Delaware Trustee and the Owner Trustee.

     "Trustee" means either the Owner Trustee or the Indenture Trustee, as the
      -------
context requires.

     "UCC" means Uniform Commercial Code as in effect in the respective
      ---
jurisdiction.

     "Underwriters" means the underwriters named in Schedule A to the
      ------------
Underwriting Agreement.

     "Underwriting Agreement" means the Underwriting Agreement, dated November
      ----------------------
21, 2002, between PASS and the Representative, relating to the purchase of the
Securities by the Underwriters from PASS.

     Section 1.02. Other Definitional Provisions.
                   -----------------------------

     (a) Capitalized terms used herein that are not otherwise defined shall have
the meanings ascribed thereto in the Sale and Servicing Agreement.

     (b) The words "hereof", "herein" and "hereunder" and words of similar
import when used in this Agreement shall refer to this Agreement as a whole and
not to any particular provision of this Agreement; Section, subsection, Schedule
and Exhibit references contained in this Agreement are references to Sections,
subsections, Schedules and Exhibits in or to this Agreement unless otherwise
specified; the term "proceeds" shall have the meaning set forth in the
applicable UCC; and the word "including" means including without limitation.

                                       4

<PAGE>
                                  ARTICLE TWO

                            CONVEYANCE OF RECEIVABLES

     Section 2.01. Sale and Conveyance of Receivables.
                   ----------------------------------

     (a) The Seller hereby sells, transfers, assigns, sets over and otherwise
conveys to the Purchaser, and the Purchaser hereby purchases from the Seller,
without recourse (subject to the Seller's obligations hereunder), all of the
right, title and interest of the Seller in, to and under the following:

          (i) the Receivables;

          (ii) all amounts received on or in respect of the Receivables
     (including proceeds of the repurchase of Receivables by the Seller pursuant
     to Section 3.02(g)) after the Cutoff Date;

          (iii) the security interests in the Financed Vehicles granted by the
     Obligors pursuant to the Receivables;

          (iv) all proceeds from claims on or refunds of premiums of any
     physical damage or theft insurance policies covering the Financed Vehicles
     and any proceeds or refunds of premiums of any credit life or credit
     disability insurance policies relating to the Financed Vehicles or the
     Obligors;

          (v) the Receivable Files;

          (vi) the right to realize upon any property (including the right to
     receive future Liquidation Proceeds) that shall have secured a Receivable
     and have been repossessed by or on behalf of the Issuer; and

          (vii) all present and future claims, demands, causes of action and
     choses in action in respect of any or all of the foregoing and all payments
     on or under and all proceeds of every kind and nature whatsoever in respect
     of any or all of the foregoing, including all proceeds of the conversion
     thereof, voluntary or involuntary, into cash or other liquid property, all
     cash proceeds, accounts, accounts receivable, notes, drafts, acceptances,
     chattel paper, checks, deposit accounts, insurance proceeds, condemnation
     awards, rights to payment of any and every kind and other forms of
     obligations and receivables, instruments and other property which at any
     time constitute all or part of or are included in the proceeds of any of
     the foregoing.

     (b) The parties hereto intend that the conveyance of the Receivables and
related property hereunder be a sale and not a loan. In the event that the
conveyance hereunder is not for any reason considered a sale, the Seller hereby
grants to the Purchaser a first priority perfected security interest in all of
the Seller's right, title and interest in, to and under the Receivables, and all
other property conveyed hereunder and listed in this Section and all proceeds of
any of the foregoing. The parties intend that this Agreement constitute a
security agreement under applicable law. Such grant is made to secure the
payment of all amounts payable hereunder,

                                       5

<PAGE>

including the Receivables Purchase Price. If such conveyance is for any reason
considered to be a loan and not a sale, the Seller consents to the Purchaser
transferring such security interest in favor of the Indenture Trustee and
transferring the obligation secured thereby to the Indenture Trustee.

     (c) The Seller agrees to treat the transfer of the Receivables and the
related property contemplated by Section 2.01(a) for all purposes (including tax
and financial accounting purposes) as an absolute transfer on all relevant
books, records, tax returns, financial statements and other applicable
documents.

     Section 2.02. Receivables Purchase Price; Payments on the Receivables.
                   -------------------------------------------------------

     (a) On the Closing Date, in exchange for the Receivables and other assets
described in Section 2.01(a), the Purchaser shall pay the Seller, in immediately
available funds, the Receivables Purchase Price. The Purchaser shall deposit,
from funds it receives from the issuance of the Securities, the Initial Reserve
Account Deposit into the Reserve Account, which amount shall be an asset of the
Trust. The Seller, upon consummation of the transactions contemplated by the
Basic Documents, shall be the holder of the Residual Interest.

     (b) The Purchaser shall be entitled to, and shall convey such right to the
Owner Trustee pursuant to the Sale and Servicing Agreement, all payments of
principal and interest on or in respect of the Receivables received after the
Cutoff Date.

     Section 2.03. Transfer of Receivables. Pursuant to the Sale and Servicing
                   -----------------------
Agreement, the Purchaser will assign all of its right, title and interest in, to
and under the Receivables and other assets described in Section 2.01(a) to the
Issuer. The parties hereto acknowledge that the Issuer will pledge its rights to
and under the Receivables and other assets described in Section 2.01(a) to the
Indenture Trustee pursuant to the Trust Agreement. The Purchaser has the right
to assign its interest under this Agreement as may be required to effect the
purposes of the Sale and Servicing Agreement, without the consent of the Seller,
and the Owner Trustee as assignee shall succeed to the rights and obligations
hereunder of the Purchaser.

     Section 2.04. Examination of Receivable Files. The Seller will make the
                   -------------------------------
Receivable Files available to the Purchaser or its agent for examination during
normal business hours at the Seller's offices or such other location as
otherwise shall be agreed upon by the Purchaser and the Seller.

     Section 2.05. Expenses. The Seller will reimburse the Purchaser for certain
                   --------
of the expenses of the Purchaser in connection with the sale of the Securities,
including (i) expenses incident to the printing, reproducing and distributing of
the Term Sheet and the Prospectus, (ii) any fees charged by Moody's and Standard
& Poor's in connection with the rating of the Securities, (iii) the fees of DTC
in connection with the book-entry registration of the Securities, (iv) the
reasonable expenses incurred by the Purchaser in connection with the initial
qualification of the Securities for sale under the laws of such jurisdictions in
the United States as the Purchaser may designate, including fees of counsel and
disbursements incurred by such counsel in connection therewith and (v) the fees,
which shall not exceed the amount previously agreed upon between the Purchaser
and the Seller, and disbursements of Sidley Austin Brown & Wood

                                       6

<PAGE>

LLP, counsel to the Purchaser and to the Underwriters, in connection with the
purchase of the Receivables hereunder and the issuance and sale of the
Securities.


                                       7

<PAGE>


                                 ARTICLE THREE

                         REPRESENTATIONS AND WARRANTIES

     Section 3.01. Representations and Warranties of the Purchaser. The
                   -----------------------------------------------
Purchaser hereby represents and warrants to the Seller as of the date of this
Agreement and as of the Closing Date that:

          (a) Organization and Good Standing. The Purchaser is a limited
              ------------------------------
     liability company duly organized, validly existing and in good standing
     under the laws of the State of Delaware, and has power and authority to own
     its properties and to conduct its business as such properties are currently
     owned and such business is presently conducted, and had at all relevant
     times, and shall have, power, authority and legal right to acquire, own and
     sell the Receivables.

          (b) Power and Authority. The Purchaser has the power and authority to
              -------------------
     execute and deliver this Agreement and to carry out its terms; and the
     execution, delivery and performance of this Agreement has been duly
     authorized by the Purchaser by all necessary action.

          (c) No Violation. The consummation of the transactions contemplated by
              ------------
     this Agreement and the fulfillment of the terms hereof shall not conflict
     with, result in any breach of any of the terms and provisions of, nor
     constitute (with or without notice or lapse of time) a default under, the
     limited liability company agreement or certificate of formation of the
     Purchaser, or conflict with or breach any of the material terms or
     provisions of, or constitute (with or without notice or lapse of time) a
     default under, any indenture, agreement or other instrument to which the
     Purchaser is a party or by which it may be bound.

     Section 3.02. Representations and Warranties of CarMax.
                   ----------------------------------------

     (a) The Seller makes the representations and warranties contained in
Exhibit D attached hereto and incorporated herein by reference on which the
Purchaser relies in accepting the Receivables. The representations and
warranties of CarMax contained in Section 7.1 of the Sale and Servicing
Agreement are incorporated herein as if set forth herein and as if made to the
Purchaser on the date hereof.

     (b) As of each Representation Date, the Seller Information is true and
accurate in all material respects and did not or does not contain any untrue
statement of a material fact or omit to state a material fact necessary in order
to make the statements therein, in the light of the circumstances under which
they were made, not misleading.

     (c) It is understood and agreed that the representations and warranties
incorporated by reference in Section 3.02(a) or set forth in Section 3.02(b)
shall remain operative and in full force and effect, shall survive the transfer
and conveyance of the Receivables and other assets described in Section 2.01(a)
by the Seller to the Purchaser and by the Purchaser to the Issuer and shall
inure to the benefit of the Purchaser, the Trustees and the Securityholders.

                                       8

<PAGE>

     (d) The Seller shall indemnify the Purchaser and hold the Purchaser
harmless against any losses, penalties, fines, forfeitures, legal fees and
related costs, judgments and other costs and expenses resulting from any third
party claim, demand, defense or assertion based on or grounded upon, or
resulting from, a breach of the Seller's representations and warranties
incorporated by reference in Section 3.02(a) or set forth in Section 3.02(b).
The Trustees shall also have the remedies provided in the Sale and Servicing
Agreement.

     (e) Any cause of action against the Seller relating to or arising out of
the breach of any of its representations and warranties made or incorporated by
reference in this Section shall accrue as to any Receivable upon (i) discovery
of such breach by the Purchaser or either Trustee or notice thereof by the
Seller to the Purchaser, (ii) failure by the Seller to cure such breach and
(iii) demand upon the Seller by the Purchaser for all amounts payable in respect
of such Receivable under this Agreement.

     (f) The Purchaser or the Seller, as the case may be, shall inform the other
parties promptly, in writing, upon discovery of any breach of the Seller's
representations and warranties pursuant to this Section which materially and
adversely affects the interests of the Securityholders in any Receivable.

     (g) If a breach of any representation or warranty incorporated by reference
in Section 3.02(a) which materially and adversely affects the interests of the
Purchaser, the Trust or the Securityholders in any Receivable shall not have
been cured by the close of business on the last day of the Collection Period
which includes the thirtieth day after the date on which the Seller becomes
aware of, or receives written notice from the Servicer, the Purchaser, the Owner
Trustee or the Insurer of such breach or failure, the Seller shall repurchase
such Receivable from the Trust on the Distribution Date immediately following
such Collection Period. In consideration for the repurchase of any such
Receivable, the Seller shall remit the Purchase Amount of such Receivable to the
Trust. Upon any such repurchase, the Purchaser shall, without further action, be
deemed to transfer, assign, set-over and otherwise convey to the Seller, without
recourse, representation or warranty, all the right, title and interest of the
Purchaser in, to and under such repurchased Receivable and all other related
assets described in Section 2.01(a). The Purchaser, the Issuer, the Owner
Trustee or the Indenture Trustee, as applicable, shall execute such documents
and instruments of transfer or assignment and take such other actions as shall
reasonably be requested by the Seller to effect the conveyance of such
Receivable pursuant to this Section. The sole remedy of the Purchaser, the
Issuer, the Trustees or the Securityholders with respect to a breach of the
Seller's representations and warranties pursuant to Section 3.02(a) or with
respect to the existence of any such Liens or claims shall be to require the
Seller to repurchase the related Receivables pursuant to this Section.

                                       9

<PAGE>

                                  ARTICLE FOUR

                                   CONDITIONS

     Section 4.01. Conditions to Obligation of the Purchaser. The obligation of
                   -----------------------------------------
the Purchaser to purchase the Receivables from the Seller on the Closing Date is
subject to the satisfaction of the following conditions:

          (a) Representations and Warranties True. The representations and
              -----------------------------------
     warranties of CarMax contained herein and in the other Basic Documents
     shall be true and correct on the Closing Date with the same effect as if
     made on the Closing Date, and each of the Seller and the Servicer shall
     have performed all obligations to be performed by it hereunder and under
     the other Basic Documents on or before the Closing Date.

          (b) Computer Files Marked. The Seller shall, at its own expense, on or
              ---------------------
     before the Closing Date, indicate in its computer files that the
     Receivables have been sold to the Purchaser pursuant to this Agreement and
     deliver to the Purchaser the Receivables Schedule, certified by an officer
     of the Seller to be true, correct and complete.

          (c) Release of Lenders. The Seller shall obtain executed release
              ------------------
     agreements and UCC partial releases with respect to the Receivables from
     Bank of America, N.A. (and certain other parties) and CarMax Funding, LLC,
     in each case in form and substance satisfactory to the Purchaser.

          (d) Documents to be Delivered. The Purchaser shall have received the
              -------------------------
     following, all of which shall be dated as of the Closing Date or such other
     date as specified:

               (i) the Receivables Schedule;

               (ii) an Officer's Certificate of the Seller, substantially in the
          form of Exhibit B hereto;

               (iii) an opinion or opinions of counsel for the Seller, in the
          aggregate substantially in the form of Exhibit C hereto, addressed to
          the Purchaser, the Insurer and the Underwriters;

               (iv) a letter, dated November 21, 2002, from KPMG LLP as to
          certain financial and statistical information in the Prospectus
          Supplement, which letter shall be acceptable in form and substance to
          the Purchaser;

               (v) copies of resolutions of the board of directors of the Seller
          approving the execution, delivery and performance of the Basic
          Documents to which the Seller is a party, and the performance of the
          transactions contemplated hereunder and thereunder, certified by the
          Secretary or an Assistant Secretary of the Seller;

                                       10

<PAGE>

               (vi) copies of the articles of incorporation of the Seller,
          together with all amendments, revisions and supplements thereto,
          certified by the Virginia State Corporation Commission as of a recent
          date, and a certificate of fact from the Virginia State Corporation
          Commission, dated as of a recent date, to the effect that the Seller
          has been duly incorporated, is in good standing and has a legal
          corporate existence;

               (vii) UCC search reports from the appropriate offices in Virginia
          as to the Seller;

               (viii) reliance letters to each opinion of counsel to the Seller
          or the Servicer delivered to Standard & Poor's, Moody's or the Insurer
          in connection with the purchase of the Receivables hereunder or the
          issuance or sale of the Securities;

               (ix) a financing statement to be filed with the Virginia State
          Corporation Commission, naming the Seller, as seller or debtor, the
          Purchaser, as purchaser or secured party, and the Trust, as assignee,
          naming the Receivables and the related property described in Section
          2.01(a) as collateral and meeting the requirements of the laws of each
          such jurisdiction and in such manner as is necessary to perfect the
          sale, transfer, assignment and conveyance of the Receivables to the
          Purchaser;

               (x) the Bill of Sale; and

               (xi) such other documents, certificates and opinions as may be
          reasonably requested by the Purchaser or its counsel.

          (e) Execution of Basic Documents. The Basic Documents shall have been
              ----------------------------
     executed and delivered by the parties thereto.

          (f) Insurance Policy Issued. The Insurance Policy shall have been
              -----------------------
     issued and delivered by the Insurer.


          (g) Rating of the Securities. Moody's and Standard & Poor's,
              ------------------------
     respectively, shall have assigned ratings of (i) "Prime-1" and "A-1+" to
     the Class A-1 Notes and (ii) "Aaa" and "AAA" to the Class A-2 Notes, the
     Class A-3 Notes, the Class A-4 Notes and the Certificates.

          (h) No Unsolicited Ratings. There shall not have been issued an
              ----------------------
     unsolicited rating of the Securities by any nationally recognized
     statistical rating agency at a level that is lower than the ratings for the
     Securities from Moody's or Standard & Poor's specified in Section 4.01(g).

          (i) Other Transactions. The transactions contemplated by the Basic
              ------------------
     Documents shall be consummated on the Closing Date.

                                       11





<PAGE>

          (j) No Termination of the Underwriting Agreement. The Purchaser may
              --------------------------------------------
     terminate this Agreement at any time at or prior to the Closing Date (i) if
     there has been, since the respective dates as of which information is given
     in the Prospectus, any material adverse change in the condition, financial
     or otherwise, or in the earnings, business affairs or business prospects of
     the Purchaser or CarMax, whether or not arising in the ordinary course of
     business, (ii) if there has occurred any material adverse change in the
     financial markets in the United States, any outbreak of hostilities or
     escalation thereof or other calamity or crisis or any change or development
     involving a prospective change in national or international political,
     financial or economic conditions, in each case the effect of which is such
     as to make it, in the judgment of the Representative, impracticable or
     inadvisable to market the Securities or to enforce contracts for the sale
     of the Securities, (iii) if trading in any securities of the Purchaser,
     CarMax or any of their Affiliates has been suspended or materially limited
     by the SEC or if trading generally on the American Stock Exchange, the New
     York Stock Exchange or in the Nasdaq National Market has been suspended or
     materially limited, or minimum or maximum prices for trading have been
     fixed, or maximum ranges for prices have been required, by any of said
     exchanges or by such system or by order of the SEC, the National
     Association of Securities Dealers, Inc. or any other governmental
     authority, (iv) a material disruption has occurred in commercial banking or
     securities settlement or clearing services in the United States or (v) if a
     banking moratorium has been declared by either Federal, Virginia, North
     Carolina or New York authorities.

     Section 4.02. Conditions to Obligation of the Seller. The obligation of the
                   --------------------------------------
Seller to sell the Receivables to the Purchaser on the Closing Date is subject
to the satisfaction of the following conditions:

          (a) Representations and Warranties True. The representations and
              -----------------------------------
     warranties of the Purchaser contained herein and in the other Basic
     Documents shall be true and correct on the Closing Date with the same
     effect as if then made, and the Purchaser shall have performed all
     obligations to be performed by it hereunder and under the other Basic
     Documents on or before the Closing Date.

          (b) Payment of Receivables Purchase Price. In consideration of the
              -------------------------------------
     sale of the Receivables from the Seller to the Purchaser as provided in
     Section 2.01, on the Closing Date the Purchaser shall have paid the Seller
     an amount equal to the Receivables Purchase Price.

          (c) Opinions of Purchaser. An opinion or opinions of counsel for the
              ---------------------
     Purchaser addressed to the Seller, the Insurer and the Underwriters shall
     have been delivered.

                                       12

<PAGE>


                                  ARTICLE FIVE

                             COVENANTS OF THE SELLER

     Section 5.01. Protection of Right, Title and Interest in, to and Under the
                   ------------------------------------------------------------
Receivables.
-----------

     (a) The Seller, at its expense, shall cause all financing statements and
continuation statements and any other necessary documents covering the
Purchaser's right, title and interest in, to and under the Receivables and other
property conveyed by the Seller to the Purchaser hereunder to be promptly
authorized, recorded, registered and filed, and at all times to be kept
recorded, registered and filed, all in such manner and in such places as may be
required by law fully to preserve and protect the right, title and interest of
the Purchaser hereunder to the Receivables and such other property. The Seller
shall deliver to the Purchaser file-stamped copies of, or filing receipts for,
any document recorded, registered or filed as provided above, as soon as
available following such recording, registration or filing. The Purchaser shall
cooperate fully with the Seller in connection with the obligations set forth
above and will execute any and all documents reasonably required to fulfill the
intent of this subsection.

     (b) Within five days after the Seller makes any change in its name,
identity or organizational structure which would make any financing statement or
continuation statement filed in accordance with Section 4.01(d) seriously
misleading within the meaning of the UCC as in effect in the applicable state,
the Seller shall give the Purchaser notice of any such change and, within 30
days after such change, shall authorize and file such financing statements or
amendments as may be necessary to continue the perfection of the Purchaser's
security interest in the Receivables and the proceeds thereof.

     (c) The Seller shall give the Purchaser written notice within five days of
any relocation of the state of organization of the Seller or any office in which
the Seller keeps records concerning the Receivables and whether, as a result of
such relocation, the applicable provisions of the UCC would require the filing
of any amendment of any previously filed financing or continuation statement or
of any new financing statement and, within 30 days after such relocation, shall
authorize and file such financing statements or amendments as may be necessary
to continue the perfection of the interest of the Purchaser in the Receivables
and the proceeds thereof. The Seller shall at all times maintain its state of
organization, its principal place of business and its chief executive office and
the location of the office where the Receivables Files and any accounts and
records relating to the Receivables are kept within the United States of
America.

     (d) The Seller shall maintain accounts and records as to each Receivable
accurately and in sufficient detail to permit (i) the reader thereof to know at
any time the status of such Receivable, including payments and recoveries made
and payments owing (and the nature of each) and (ii) reconciliation between
payments or recoveries on (or with respect to) each Receivable.

     (e) The Seller shall maintain its computer systems so that, from and after
the time of the transfer of the Receivables to the Purchaser pursuant to this
Agreement, the Seller's master computer records (including any back-up archives)
that refer to a Receivable shall indicate

                                       13

<PAGE>

clearly and unambiguously that such Receivable is owned by the Purchaser (or,
upon transfer of the Receivables to the Issuer, by the Issuer). Indication of
the Purchaser's ownership of a Receivable shall be deleted from or modified on
the Seller's computer systems when, and only when, such Receivable shall have
been paid in full or repurchased by the Seller.

     (f) If at any time the Seller shall propose to sell, grant a security
interest in or otherwise transfer any interest in any motor vehicle retail
installment sale contract to any prospective purchaser, lender or other
transferee, the Seller shall give to such prospective purchaser, lender or other
transferee computer tapes, compact disks, records or print-outs (including any
restored from back-up archives) that, if they shall refer in any manner
whatsoever to any Receivable, shall indicate clearly and unambiguously that such
Receivable has been sold and is owned by the Purchaser (or, upon transfer of the
Receivables to the Issuer, the Issuer), unless such Receivable has been paid in
full or repurchased by the Seller.

     (g) The Seller shall permit the Purchaser and its agents at any time during
normal business hours to inspect, audit and make copies of and abstracts from
the Seller's records regarding any Receivable.

     (h) If the Seller has repurchased one or more Receivables from the
Purchaser or the Issuer pursuant to Section 3.02(g), the Seller shall, upon
request, furnish to the Purchaser, within ten days, a list of all Receivables
(by receivable number and name of Obligor) then owned by the Purchaser, together
with a reconciliation of such list to the Receivables Schedule.

     Section 5.02. Security Interests. Except for the conveyances hereunder, the
                   ------------------
Seller covenants that it will not sell, pledge, assign or transfer to any other
Person, or grant, create, incur, assume or suffer to exist any Lien on any
Receivable, whether now existing or hereafter created, or any interest therein;
the Seller will immediately notify the Purchaser of the existence of any Lien on
any Receivable and, in the event that the interests of the Securityholders in
such Receivable are materially and adversely affected, such Receivable shall be
repurchased from the Purchaser by the Seller in the manner and with the effect
specified in Section 3.02(g), and the Seller shall defend the right, title and
interest of the Purchaser in, to and under the Receivables, whether now existing
or hereafter created, against all claims of third parties claiming through or
under the Seller.

     Section 5.03. Delivery of Payments. The Seller covenants and agrees to
                   --------------------
deliver in kind upon receipt to the Servicer under the Sale and Servicing
Agreement all payments received by the Seller in respect of the Receivables as
soon as practicable after receipt thereof by the Seller.

     Section 5.04. No Impairment. The Seller covenants that it shall take no
                   -------------
action, nor omit to take any action, which would impair the rights of the
Purchaser in any Receivable, nor shall it, except as otherwise provided in this
Agreement or the Sale and Servicing Agreement, reschedule, revise or defer
payments due on any Receivable.

     Section 5.05. Costs and Expenses. The Seller shall pay all reasonable costs
                   ------------------
and expenses incurred in connection with the perfection of the Purchaser's
right, title and interest in, to and under the Receivables.

                                       14





<PAGE>

     Section 5.06. Hold Harmless. The Seller shall protect, defend, indemnify
                   -------------
and hold the Purchaser and the Issuer and their respective assigns and their
attorneys, accountants, employees, officers and directors harmless from and
against all losses, costs, liabilities, claims, damages and expenses of every
kind and character, as incurred, resulting from or relating to or arising out of
(i) the inaccuracy, nonfulfillment or breach of any representation, warranty,
covenant or agreement made by CarMax in this Agreement, (ii) any legal action,
including any counterclaim, that has either been settled by the litigants (which
settlement, if the Seller is not a party thereto shall be with the consent of
the Seller) or has proceeded to judgment by a court of competent jurisdiction,
in either case to the extent it is based upon alleged facts that, if true, would
constitute a breach of any representation, warranty, covenant or agreement made
by the Seller in this Agreement, (iii) any actions or omissions of the Seller or
any employee or agent of the Seller occurring prior to the Closing Date with
respect to any Receivable or Financed Vehicle or (iv) any failure of a
Receivable to be originated in compliance with all requirements of law. These
indemnity obligations shall be in addition to any obligation that the Seller may
otherwise have.

     Section 5.07. Merger, Consolidation or Assumption of the Obligations of the
                   -------------------------------------------------------------
Seller. The Seller shall not transfer or otherwise assign its obligations as
------
Servicer under the Sale and Servicing Agreement nor enter into any merger,
conversion or consolidation to which the Servicer is a party, unless the Insurer
shall otherwise consent in writing to any such transfer, assignment or
succession; provided, however, that the consent of the Insurer shall not be
required if the Servicer shall be the surviving entity in any such merger,
conversion or consolidation.

                                       15

<PAGE>


                                  ARTICLE SIX

                                 INDEMNIFICATION

     Section 6.01. Indemnification.
                   ---------------

     (a) The Seller agrees to indemnify and hold harmless the Purchaser, each
Underwriter and each person, if any, who controls the Purchaser or any
Underwriter within the meaning of Section 15 of the Securities Act or Section 20
of the Exchange Act as follows:

          (i) against any and all loss, liability, claim, damage and expense
     whatsoever, as incurred, arising out of any untrue statement or alleged
     untrue statement of a material fact included in the Seller Information or
     any similar information contained in the Term Sheet or the Prospectus or
     any amendment or supplement thereto, or the omission or alleged omission
     from the Seller Information or such similar information of a material fact
     necessary in order to make the statements therein, in the light of the
     circumstances under which they were made, not misleading;

          (ii) against any and all loss, liability, claim, damage and expense
     whatsoever, as incurred, to the extent of the aggregate amount paid in
     settlement of any litigation, or any investigation or proceeding by any
     governmental agency or body, commenced or threatened, or of any claim
     whatsoever, based upon any such untrue statement or omission, or any such
     alleged untrue statement or omission; provided that (subject to Section
     6.01(c)) any such settlement is effected with the written consent of the
     Seller; and

          (iii) against any and all expense whatsoever, as incurred (including
     the fees and disbursements of counsel chosen by the Purchaser or the
     Representative), reasonably incurred in investigating, preparing or
     defending against any litigation, or any investigation or proceeding by any
     governmental agency or body, commenced or threatened, or any claim
     whatsoever, based upon any such untrue statement or omission, or any such
     alleged untrue statement or omission, to the extent that any such expense
     is not paid under clause (i) or (ii) above.

     (b) Each indemnified party shall give notice as promptly as reasonably
practicable to each indemnifying party of any action commenced against it in
respect of which indemnity may be sought hereunder, but failure to so notify an
indemnifying party shall not relieve such indemnifying party from any liability
hereunder to the extent it is not materially prejudiced as a result thereof and
in any event shall not relieve it from any liability which it may have otherwise
than on account of this indemnity agreement. Counsel to the indemnified parties
shall be selected by the Purchaser or the Representative, subject to the consent
of the indemnifying party (which consent shall not be unreasonably withheld). An
indemnifying party may participate at its own expense in the defense of any such
action; provided, however, that counsel to the indemnifying party shall not
(except with the consent of the indemnified party) also be counsel to the
indemnified party. In no event shall the indemnifying parties be liable for fees
and expenses of more than one counsel (in addition to any local counsel)
separate from their own counsel for all indemnified parties in connection with
any one action or separate but similar or related actions in the same
jurisdiction arising out of the same general allegations or

                                       16

<PAGE>

circumstances. No indemnifying party shall, without the prior written consent of
the indemnified parties, settle or compromise or consent to the entry of any
judgment with respect to any litigation, or any investigation or proceeding by
any governmental agency or body, commenced or threatened, or any claim
whatsoever in respect of which indemnification or contribution could be sought
under this Section (whether or not the indemnified parties are actual or
potential parties thereto), unless such settlement, compromise or consent (i)
includes an unconditional release of each indemnified party from all liability
arising out of such litigation, investigation, proceeding or claim and (ii) does
not include a statement as to or an admission of fault, culpability or a failure
to act by or on behalf of any indemnified party.

     (c) If at any time an indemnified party shall have requested an
indemnifying party to reimburse the indemnified party for fees and expenses of
counsel, such indemnifying party agrees that it shall be liable for any
settlement of the nature contemplated by Section 6.01(a)(ii) effected without
its written consent if (i) such settlement is entered into more than 45 days
after receipt by such indemnifying party of the aforesaid request, (ii) such
indemnifying party shall have received notice of the terms of such settlement at
least 30 days prior to such settlement being entered into and (iii) such
indemnifying party shall not have reimbursed such indemnified party in
accordance with such request prior to the date of such settlement; provided,
however, that such indemnifying party shall not be liable for such settlement if
it has notified the indemnified party in writing that it objects to the terms of
such settlement within 30 days after receipt of the notice described in clause
(ii) above or that it objects to the requested fees and expenses within 45 days
after receipt of such request.

     (d) If recovery is not available under the provisions of this Section for
any reason other than as specified herein, the parties entitled to
indemnification by the terms hereof shall be entitled to contribution to
liabilities and expenses, except to the extent that contribution is not
permitted under Section 11(f) of the Securities Act. In determining the amount
of contribution to which the respective parties are entitled, there shall be
considered the relative benefits received by each party, the parties' relative
knowledge and access to information concerning the matter with respect to which
the claim was asserted, the opportunity to correct and prevent any statement or
omission, and any other equitable considerations appropriate under the
circumstances. The parties hereto agree that it would not be equitable if the
amount of such contribution were determined by pro rata or per capita allocation
or by any other method of allocation which does not take account of the
equitable considerations referred to above in this Section. The aggregate amount
of losses, liabilities, claims, damages and expenses incurred by an indemnified
party and referred to above in this Section shall be deemed to include any legal
or other expenses reasonably incurred by such indemnified party in
investigating, preparing or defending against any litigation, or any
investigation or proceeding by any governmental agency or body, commenced or
threatened, or any claim whatsoever, based upon any such untrue or alleged
untrue statement or omission or alleged omission.

     Notwithstanding the provisions of this Section, no Underwriter shall be
required to contribute any amount in excess of the amount by which the total
underwriting discounts and commissions received by it in connection with the
Securities underwritten by it and distributed to the public exceeds the amount
of any damages which such Underwriter has otherwise been required to pay by
reason of any such untrue or alleged untrue statement or omission or alleged
omission.

                                       17

<PAGE>

     No person guilty of fraudulent misrepresentation (within the meaning of
Section 11(f) of the Securities Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation.

                                       18

<PAGE>

                                 ARTICLE SEVEN

                            MISCELLANEOUS PROVISIONS

     Section 7.01. Amendment.
                   ---------

     (a) This Agreement may be amended from time to time by a written amendment
duly executed and delivered by the Purchaser and the Seller, without the consent
of the Securityholders, to cure any ambiguity, to correct or supplement any
provision herein which may be inconsistent with any other provision herein or to
add any other provision with respect to matters or questions arising under this
Agreement which shall not be inconsistent with the provisions of this Agreement
or the Sale and Servicing Agreement; provided, however, that any such amendment
shall not, as evidenced by an Opinion of Counsel to the Seller delivered to the
Indenture Trustee, adversely affect in any material respect the interests of the
Securityholders or of the Insurer.

     (b) This Agreement may also be amended from time to time for any other
purpose by a written amendment duly executed and delivered by the Seller and by
the Purchaser; provided, however, that any such amendment that materially
adversely affects the interests of the Securityholders under the Indenture, the
Sale and Servicing Agreement or the Trust Agreement must be consented to by the
Holders of Notes evidencing not less than 51% of the Note Balance and the
Holders of Certificates evidencing not less than 51% of the Certificate Balance;
and, provided further, that no such amendment shall be effective without the
consent of the Insurer, if such proposed amendment would reasonably be expected
to have a material adverse effect on the interests of the Insurer.

     (c) Promptly after the execution of any amendment to this Agreement, the
Seller shall furnish written notification of the substance of such amendment to
the Owner Trustee, the Indenture Trustee and the Rating Agencies.

     Section 7.02. Termination. The respective obligations and responsibilities
                   -----------
of the Seller and the Purchaser created hereby shall terminate, except for the
indemnity obligations of the Seller as provided herein, upon the termination of
the Issuer as provided in the Trust Agreement.

     Section 7.03. Governing Law. THIS AGREEMENT SHALL BE CONSTRUED IN
                   -------------
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO ITS
CONFLICT OF LAW PROVISIONS (OTHER THAN SECTION 5-1401 OF THE GENERAL OBLIGATIONS
LAW), AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE
DETERMINED IN ACCORDANCE WITH SUCH LAWS.

     Section 7.04. Notices. All demands, notices and communications hereunder
                   -------
shall be in writing and shall be deemed to have been duly given if personally
delivered at or sent by telecopier, overnight courier or mailed by registered
mail, return receipt requested, in the case of (i) the Purchaser, to Pooled Auto
Securities Shelf LLC, One Wachovia Center, 301 South College Street, Charlotte,
North Carolina 28288, Attention: General Counsel and (ii) the Seller, to CarMax
Auto Superstores, Inc., 4900 Cox Road, Glen Allen, Virginia 23060, Attention:

                                       19

<PAGE>

Treasury Department; or, as to either of such Persons, at such other address as
shall be designated by such Person in a written notice to the other Persons.

     Section 7.05. Severability of Provisions. If any one or more of the
                   --------------------------
covenants, agreements, provisions or terms of this Agreement shall for any
reason whatsoever be held invalid, then such covenants, agreements, provisions
or terms shall be deemed severable from the remaining covenants, agreements,
provisions and terms of this Agreement and shall in no way affect the validity
or enforceability of the other covenants, agreements, provisions and terms of
this Agreement or any amendment or supplement hereto.

     Section 7.06. Further Assurances. The Seller and the Purchaser agree to do
                   ------------------
and perform, from time to time, any and all acts and to execute any and all
further instruments required or reasonably requested by the other party hereto
or by the Issuer or the Indenture Trustee more fully to effect the purposes of
this Agreement, including the execution of any financing statements, amendments,
continuation statements or releases relating to the Receivables for filing under
the provisions of the UCC or other law of any applicable jurisdiction.

     Section 7.07. No Waiver; Cumulative Remedies. No failure to exercise and no
                   ------------------------------
delay in exercising, on the part of the Purchaser, the Issuer or the Seller, any
right, remedy, power or privilege hereunder shall operate as a waiver thereof;
nor shall any single or partial exercise of any right, remedy, power or
privilege hereunder preclude any other or further exercise thereof or the
exercise of any other right, remedy, power or privilege. The rights, remedies,
powers and privileges herein provided are cumulative and not exhaustive of any
rights, remedies, powers and privileges provided by law.

     Section 7.08. Counterparts. This Agreement may be executed in two or more
                   ------------
counterparts (and by different parties on separate counterparts), each of which
shall be an original, but all of which together shall constitute one and the
same instrument.

     Section 7.09. Third-Party Beneficiaries. This Agreement will inure to the
                   -------------------------
benefit of and be binding upon the parties hereto, the Issuer and the Indenture
Trustee for the benefit of the Insurer and the Noteholders, both of which shall
be considered to be third-party beneficiaries hereof. Except as otherwise
provided in this Agreement, no other Person will have any right or obligation
hereunder.

     Section 7.10. Headings and Table of Contents. The Table of Contents and
                   ------------------------------
headings herein are for purposes of reference only and shall not otherwise
affect the meaning or interpretation of any provision hereof.

     Section 7.11. Representations, Warranties and Agreements to Survive. The
                   -----------------------------------------------------
respective agreements, representations, warranties and other statements by the
Seller and by the Purchaser set forth in or made pursuant to this Agreement
shall remain in full force and effect and will survive the closing hereunder of
the transfers and assignments by the Seller to the Purchaser and by the
Purchaser to the Issuer and shall inure to the benefit of the Purchaser, the
Trustees and the Securityholders.

     Section 7.12. No Proceedings. The Seller covenants and agrees that so long
                   --------------
as this Agreement is in effect, and for one year plus one day following its
termination, it will not file

                                       20

<PAGE>

any involuntary petition or otherwise institute any bankruptcy, reorganization
arrangement, insolvency or liquidation proceeding or other proceedings under any
federal or state bankruptcy law or similar law against the Issuer or the Owner
Trustee.

     Section 7.13. Accountant's Letters.
                   --------------------

     (a) The Seller shall cause a firm of independent certified public
accountants (who may also render other services to the Seller) to perform
certain procedures regarding the characteristics of the receivables as of the
Statistical Calculation Date (as defined in the Prospectus). The Seller shall
cooperate with the Purchaser and such accountants in making available all
information and taking all steps reasonably necessary to permit such accountants
to complete such procedures and to deliver the letters required of them under
the Underwriting Agreement.

     (b) The Seller shall cause a firm of independent certified public
accountants (who may also render other services to the Seller) to deliver to the
Purchaser a letter, dated November 21, 2002, in the form previously agreed to by
the Seller and the Purchaser, with respect to the financial and statistical
information contained in the Prospectus under the caption "The
Seller--Delinquency, Credit Loss and Recovery Information" and with respect to
such other information as may be agreed in the forms of such letters.

     Section 7.14. Obligations of Purchaser. The obligations of the Purchaser
                   ------------------------
under this Agreement shall not be affected by reason of any invalidity,
illegality or irregularity of any Receivable.

                                       21

<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective officers as of the day and year first above
written.

                                   CARMAX AUTO SUPERSTORES, INC.,
                                     as Seller

                                   By:      /s/ Keith D. Browning
                                      ------------------------------------------
                                                Keith D. Browning
                                             Chief Financial Officer



                                   POOLED AUTO SECURITIES SHELF LLC,
                                     as Purchaser

                                   By:      /s/ Curtis A. Sidden, Jr.
                                      ------------------------------------------
                                                Curtis A. Sidden, Jr.
                                                   Vice President




                                                  Receivables Purchase Agreement

<PAGE>

                                                                      SCHEDULE A

                              RECEIVABLES SCHEDULE

                    [Original on file at Servicer's office.]



                                      SA-1

<PAGE>

                                                                       EXHIBIT A

                           BILL OF SALE AND ASSIGNMENT

     For value received, in accordance with the receivables purchase agreement,
dated as of December 1, 2002 (the "Receivables Purchase Agreement"), between the
undersigned and Pooled Auto Securities Shelf LLC (the "Purchaser"), the
undersigned does hereby sell, assign, transfer and otherwise convey unto the
Purchaser, without recourse, all right, title and interest of the undersigned in
and to (i) the Receivables listed on Schedule A hereto (the "Receivables"); (ii)
all amounts received on or in respect of the Receivables (including proceeds of
the repurchase of Receivables by the Seller pursuant to the Receivables Purchase
Agreement) after the Cutoff Date; (iii) the security interests in the Financed
Vehicles granted by the Obligors pursuant to the Receivables; (iv) all proceeds
from claims on or refunds of premiums of any physical damage or theft insurance
policies covering the Financed Vehicles and any proceeds or refunds of premiums
of any credit life or credit disability insurance policies relating to the
Financed Vehicles or the Obligors; (v) the Receivable Files; (vi) the right to
realize upon any property (including the right to receive future Liquidation
Proceeds) that shall have secured a Receivable and have been repossessed by or
on behalf of the Issuer; and (vii) all present and future claims, demands,
causes of action and choses in action in respect of any or all of the foregoing
and all payments on or under and all proceeds of every kind and nature
whatsoever in respect of any or all of the foregoing, including all proceeds of
the conversion thereof, voluntary or involuntary, into cash or other liquid
property, all cash proceeds, accounts, accounts receivable, notes, drafts,
acceptances, chattel paper, checks, deposit accounts, insurance proceeds,
condemnation awards, rights to payment of any and every kind and other forms of
obligations and receivables, instruments and other property which at any time
constitute all or part of or are included in the proceeds of any of the
foregoing.

     This Bill of Sale and Assignment is made pursuant to and upon the
representations, warranties and agreements on the part of the undersigned
contained in the Receivables Purchase Agreement and is to be governed by the
Receivables Purchase Agreement.

     Capitalized terms used and not otherwise defined herein shall have the
meaning assigned to them in the Receivables Purchase Agreement.

     IN WITNESS WHEREOF, the undersigned has caused this Bill of Sale and
Assignment to be duly executed as of December 1, 2002.

                                       CARMAX AUTO SUPERSTORES, INC.



                                       By:
                                           -------------------------------------
                                           Name:
                                           Title:


                                      A-1

<PAGE>

                                                                       EXHIBIT B

                      SECRETARY'S CERTIFICATE OF THE SELLER


                                       B-1

<PAGE>

                                                                       EXHIBIT C

                       OPINIONS OF COUNSEL FOR THE SELLER


                                      C-1

<PAGE>

                                                                       EXHIBIT D

                    REPRESENTATIONS AND WARRANTIES OF SELLER

     CarMax Auto Superstores, Inc., a Virginia corporation (the "Seller"), makes
the following representations and warranties in the Receivables Purchase
Agreement, dated as of December 1, 2002 (the "Receivables Purchase Agreement"),
between the Seller and Pooled Auto Securities Shelf LLC, a Delaware limited
liability company (the "Depositor"). All capitalized terms used in such
representations and warranties have the respective meanings assigned to them in
the Receivables Purchase Agreement.

     (a) Characteristics of Receivables. Each Receivable (i) has been originated
         ------------------------------
by the Seller or an Affiliate of the Seller in the ordinary course of business
in connection with the sale of a new or used motor vehicle and has been fully
and properly executed by the parties thereto, (ii) contains customary and
enforceable provisions such that the rights and remedies of the holder thereof
are adequate for realization against the collateral of the benefits of the
security, (iii) provides for level monthly payments that fully amortize the
Amount Financed by maturity (except that the period between the date of such
Receivable and the date of the first Scheduled Payment may be less than or
greater than one month and the amount of the first and last Scheduled Payments
may be less than or greater than the level payments) and yield interest at the
related APR, (iv) provides for, in the event that such Receivable is prepaid, a
prepayment that fully pays the Principal Balance of such Receivable with
interest at the related APR through the date of payment, (v) is a retail
installment sale contract substantially in the form of Exhibit E to the
Receivables Purchase Agreement, (vi) is secured by a new or used motor vehicle
that had not been repossessed as of the Cutoff Date, (vii) is a Simple Interest
Receivable, (viii) relates to an Obligor who has made at least one payment under
such Receivable as of the Cutoff Date and (ix) relates to an Obligor whose
mailing address is located in any State.

     (b) Receivable Schedule. The information set forth in the Receivable
         -------------------
Schedule was true and correct in all material respects as of the opening of
business on the Cutoff Date, and no selection procedures believed to be adverse
to the Depositor, the Noteholders and/or the Certificateholders were utilized in
selecting the Receivables from those retail installment sale contracts which met
the criteria contained in the Receivables Purchase Agreement. The information
set forth in the compact disk or other listing regarding the Receivables made
available to the Depositor and its assigns (which compact disk or other listing
is required to be delivered as specified herein) is true and correct in all
material respects.

     (c) Compliance with Law. Each Receivable and the sale of the related
         -------------------
Financed Vehicle complied, at the time such Receivable was originated and
complies, as of the Closing Date, in all material respects with all requirements
of applicable federal, state and local laws, and regulations thereunder,
including usury laws, the Federal Truth-in-Lending Act, the Equal Credit
Opportunity Act, the Fair Credit Reporting Act, the Fair Credit Billing Act, the
Fair Debt Collection Practices Act, the Federal Trade Commission Act, the
Magnuson-Moss Warranty Act, the Federal Reserve Board's Regulations B, M and Z,
the Soldiers' and Sailors' Civil Relief Act of 1940 and state adaptations of the
National Consumer Act and the Uniform Consumer Credit Code.

                                      D-1

<PAGE>

     (d) Binding Obligation. Each Receivable represents the genuine, legal,
         ------------------
valid and binding payment obligation in writing of the related Obligor,
enforceable by the holder thereof in accordance with its terms, except as
enforceability may be limited by bankruptcy, insolvency, reorganization,
liquidation or other similar laws affecting the enforcement of creditors' rights
generally and by general principles of equity.

     (e) No Government Obligor. No Receivable is due from the United States of
         ---------------------
America or any State or from any agency, department or instrumentality of the
United States of America or any State.

     (f) Security Interest in Financed Vehicles. Immediately prior to the
         --------------------------------------
transfer of the Receivables by the Seller to the Depositor, each Receivable was
secured by a valid, binding and enforceable first priority perfected security
interest in favor of the Seller in the related Financed Vehicle, which security
interest has been validly assigned by the Seller to the Depositor. The Servicer
has received, or will receive within 180 days after the Closing Date, the
original certificate of title for each Financed Vehicle (other than any Financed
Vehicle that is subject to a certificate of title statute or motor vehicle
registration law that does not require that the original certificate of title
for such Financed Vehicle be delivered to the Seller).

     (g) Receivables in Force. No Receivable has been satisfied, subordinated or
         --------------------
rescinded, nor has any Financed Vehicle been released in whole or in part from
the Lien granted by the related Receivable.

     (h) No Waiver. No provision of any Receivable has been waived in such a
         ---------
manner that such Receivable fails to meet all of the representations and
warranties made by the Seller in this Exhibit D with respect thereto.

     (i) No Defenses. No Receivable is subject to any right of rescission,
         -----------
setoff, counterclaim or defense, including the defense of usury, and the
operation of any of the terms of any Receivable, or the exercise of any right
thereunder, will not render such Receivable unenforceable in whole or in part or
subject to any right of rescission, setoff, counterclaim or defense, including
the defense of usury, and the Seller has not received written notice of the
assertion with respect to any Receivable of any such right of rescission,
setoff, counterclaim or defense.

     (j) No Liens. To the best of the Seller's knowledge, no liens or claims
         --------
have been filed for work, labor or materials or for unpaid state or federal
taxes relating to any Financed Vehicle that are prior to, or equal or coordinate
with, the security interest in such Financed Vehicle created by the related
Receivable.

     (k) No Default; Repossession. To the best of the Seller's knowledge, no
         ------------------------
default, breach, violation or event permitting acceleration under the terms of
any Receivable has occurred and no continuing condition that with notice or the
lapse of time or both would constitute a default, breach, violation or event
permitting acceleration under the terms of any Receivable has arisen and the
Seller has not waived any such event or condition.

     (l) Title. The Seller intends that the transfer of the Receivables
         -----
contemplated by Section 2.01(a) of the Receivables Purchase Agreement constitute
a sale of the Receivables from

                                      D-2

<PAGE>

the Seller to the Depositor and that the beneficial interest in, and title to,
the Receivables not be part of the Seller's estate in the event of the filing of
a bankruptcy petition by or against the Seller under any bankruptcy law. The
Seller has not sold, transferred, assigned or pledged any Receivable to any
Person other than the Depositor. Immediately prior to the transfer of the
Receivables contemplated by Section 2.01(a) of the Receivables Purchase
Agreement, the Seller had good and marketable title to the Receivables free and
clear of any Lien, claim or encumbrance of any Person and, immediately upon such
transfer, the Depositor shall have good and marketable title to the Receivables
free and clear of any Lien, claim or encumbrance of any Person.

     (m) Security Interest Matters. The Receivables Purchase Agreement creates a
         -------------------------
valid and continuing "security interest" (as defined in the Relevant UCC) in the
Receivables in favor of the Depositor, which security interest is prior to all
other Liens and is enforceable as such as against creditors of and purchasers
from the Seller. With respect to each Receivable, the Seller has taken all steps
necessary to perfect its security interest against the related Obligor in the
related Financed Vehicle. The Receivables constitute "tangible chattel paper"
(as defined in the Relevant UCC). The Seller has caused or will cause prior to
the Closing Date the filing of all appropriate financing statements in the
proper filing offices in the appropriate jurisdictions under applicable law
necessary to perfect the security interest in the Receivables granted to the
Depositor under the Receivables Purchase Agreement. Other than the security
interest granted to the Depositor under the Receivables Purchase Agreement, the
Seller has not pledged, assigned, sold, granted a security interest in or
otherwise conveyed any of the Receivables. The Seller has not authorized the
filing of and is not aware of any financing statements against the Seller that
include a description of collateral covering the Receivables other than any
financing statement relating to the security interest granted to the Depositor
under the Sale and Servicing Agreement or that has been terminated. The motor
vehicle retail installment sale contracts that constitute or evidence the
Receivables do not have any marks or notations indicating that they have been
pledged, assigned or otherwise conveyed to any Person other than the Depositor,
the Trust or the Indenture Trustee. The Seller is not aware of any judgment or
tax lien filings against the Seller.

     (n) Financing Statements. All financing statements filed or to be filed
         --------------------
against the Seller in favor of the Trust (as assignee of the Depositor) contain
a statement substantially to the following effect: "A purchase of or security
interest in any collateral described in this financing statement will violate
the rights of the Trust." All financing statements filed or to be filed against
the Seller in favor of the Indenture Trustee (as assignee of the Trust) contain
a statement substantially to the following effect: "A purchase of or security
interest in any collateral described in this financing statement will violate
the rights of the Indenture Trustee."

     (o) Valid Assignment. No Receivable has been originated in, or is subject
         ----------------
to the laws of, any jurisdiction under which the sale, transfer, assignment and
conveyance of such Receivable under the Receivables Purchase Agreement or the
Sale and Servicing Agreement or the pledge of such Receivable under the
Indenture is unlawful, void or voidable or under which such Receivable would be
rendered void or voidable as a result of any such sale, transfer, assignment,
conveyance or pledge. The Seller has not entered into any agreement with any
account debtor that prohibits, restricts or conditions the assignment of the
Receivables.

     (p) One Original. There is only one original executed copy of each
         ------------
Receivable.

                                      D-3

<PAGE>

     (q) Principal Balance. Each Receivable had an original Principal Balance of
         -----------------
not more than $50,000 and a remaining Principal Balance as of the Cutoff Date of
not less than $500.

     (r) No Bankrupt Obligors. As of the Cutoff Date, no Receivable was due from
         --------------------
an Obligor that was the subject of a proceeding under the Bankruptcy Code of the
United States or was bankrupt.

     (s) New and Used Vehicles. As of the Cutoff Date, approximately 4.1% of the
         ---------------------
Pool Balance related to Receivables secured by new Financed Vehicles and
approximately 95.9% of the Pool Balance related to Receivables secured by used
Financed Vehicles.

     (t) Origination. Each Receivable was originated after July 1, 1998.
         -----------

     (u) Original Term to Maturity. Each Receivable had an original term to
         -------------------------
maturity of not more than 72 months and not less than 12 months and a remaining
term to maturity as of the Cutoff Date of not more than 71 months and not less
than three months.

     (v) Weighted Average Remaining Term to Maturity. As of the Cutoff Date, the
         -------------------------------------------
weighted average remaining term to maturity of the Receivables was approximately
57 months.

     (w) Annual Percentage Rate. Each Receivable has an APR of at least 5.00%
         ----------------------
and not more than 25.00%.

     (x) Location of Receivable Files. The Receivable Files are maintained at
         ----------------------------
the location listed in Schedule 2 to the Sale and Servicing Agreement.

     (y) Simple Interest Method. All payments with respect to the Receivables
         ----------------------
have been allocated consistently in accordance with the Simple Interest Method.

     (z) No Delinquent Receivables. As of the Cutoff Date, no payment due under
         -------------------------
any Receivable was more than 30 days past due.

     (aa) Prospectus Data. The tabular and numerical data contained in the
          ---------------
Prospectus relating to the characteristics of the receivables as of the
Statistical Calculation Date (as defined in the Prospectus) is true and correct
in all material respects.

     (bb) Insurance. Each Obligor has obtained or agreed to obtain physical
          ---------
damage insurance (which insurance shall not be force placed insurance) covering
the related Financed Vehicle in accordance with the Seller's normal
requirements.

     (cc) Fair Market Value. The Receivables Purchase Price and the value of the
          -----------------
Residual Interest represent the fair market value of the Receivables.

     (dd) Custodial Agreements. Immediately prior to the transfer of the
          --------------------
Receivables by the Seller to the Depositor, the Seller or an Affiliate of the
Seller had possession of the Receivable Files and there were no, and there will
not be any, custodial agreements in effect

                                      D-4

<PAGE>

materially adversely affecting the right or ability of the Seller to make, or
cause to be made, any delivery required under the Receivables Purchase
Agreement.

     (ee) Bulk Transfer Laws. The transfer of the Receivables and the Receivable
          ------------------
Files by the Seller to the Depositor pursuant to the Receivables Purchase
Agreement is not subject to the bulk transfer laws or any similar statutory
provisions in effect in any applicable jurisdiction.

                                      D-5