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                                                                    EXHIBIT 10.7

                             UNIT PURCHASE AGREEMENT


         THIS UNIT PURCHASE AGREEMENT (this "Agreement") is entered into as of
this 20th day of August, 1999 among AutoConnect, L.L.C., a Delaware limited
liability company (the "Company"), Manheim Auctions, Inc., a Delaware
corporation ("Manheim"), ADP, Inc., a Delaware corporation ("ADP"), and ATC
Holdings, Inc., a Nevada corporation ("ATCHI" and together with the Company,
Manheim, and ADP, the "Parties").

                                    RECITALS:

         A.       The Company was originally formed by Manheim and ADP on
December 18, 1997 pursuant to an Operating Agreement (the "Initial Operating
Agreement").

         B.       TPI, Inc. ("Cox") and LTM Company, L.P. ("LTM"), as the only
partners of Trader Publishing Company ("Trader"), have agreed to cause Trader to
contribute certain of its assets to the Company pursuant to a Contribution
Agreement (the "Contribution Agreement") dated the date hereof.

         C.       In connection with the closing (the "Contribution Closing") of
the transactions contemplated under the Contribution Agreement (the
"Contribution Transaction"), the Company has issued to Cox and LTM certain units
and membership interests and admitted Cox and ATCHI as members of the Company,
all as more specifically described in the Contribution Agreement and the Amended
and Restated Limited Liability Company Agreement of the Company dated the date
hereof (the "Restated LLC Agreement"), which amends and restates the Initial
Operating Agreement in its entirety.

         D.       The Company has authorized the issuance and sale to ATCHI of
223,602 Class A Units (as defined in the Restated LLC Agreement), and ATCHI
desires to subscribe for and purchase such Class A Units, all on and subject to
the terms and conditions set forth below.

         In consideration of the mutual covenants contained herein, the receipt
and sufficiency of which are hereby acknowledged, the Parties hereby agree as
follows:

1.       DEFINITIONS

All capitalized terms which are not defined herein shall have the meanings set
forth in the Restated LLC Agreement.

2.       ISSUANCE AND SALE OF UNITS

Upon the terms and subject to the conditions set forth herein, the Company
hereby issues and sells to ATCHI, and ATCHI hereby purchases from the Company,
223,602 Class A Units (the "Purchase Units") for an aggregate cash purchase
price of $19,378,881.99 (the "Purchase Price"). The aggregate Class A Units and
Membership Interest of LTM and ATCHI


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immediately following such purchase (assuming the KPCB Purchase, as defined and
described below) shall equal 473,602 and 25.42%, respectively.

3.       CLOSING DATE; DELIVERY

         3.1.     Closing Date. The closing of the purchase and sale of the
Purchase Units hereunder (the "Subscription Closing") shall be held at the
offices of Dow, Lohnes & Albertson, PLLC, 1200 New Hampshire Avenue, N.W., Suite
800, Washington, D.C. 20036, or such other place as shall be mutually agreeable
to the Parties, on August 20, 1999, immediately following the Contribution
Closing (the "Closing Date").

         3.2.     Delivery. At the Subscription Closing, the Company will
deliver to ATCHI the Restated LLC Agreement, against payment by wire transfer of
the Purchase Price.

4.       REPRESENTATIONS AND WARRANTIES OF THE COMPANY

In order to induce ATCHI to enter into this Agreement, the Company represents
and warrants to ATCHI that the statements in this Article 4 are correct and
complete as of the date of this Agreement. The following representations and
warranties, other than those set forth in Sections 4.2 and 4.3 below, assume
that the Contribution Closing shall have not occurred (and, in the case of
forward looking statements, will not occur) such that the Company would not be
affected by or subject to the Contribution Transaction.

         4.1.     Organization, Good Standing Qualification and Subsidiaries.
The Company is a limited liability company duly organized, validly existing and
in good standing under the laws of the state of Delaware. The Company has all
requisite limited liability company power and authority (a) to execute and
deliver this Agreement and any other agreement to which the Company is a party
and the execution and delivery of which is contemplated hereby (the "Related
Agreements"), (b) to issue and sell the Purchase Units, and to carry out the
provisions of this Agreement and any Related Agreements, and (c) to conduct its
business as presently conducted and as proposed to be conducted. The Company is
duly qualified and is in good standing in each jurisdiction where the failure to
be so qualified would have a material and adverse effect on the business,
properties, operations or financial condition of the Company. The Company has no
subsidiaries, participates in no joint ventures, and does not own or control or
have a commitment to purchase or acquire, directly or indirectly, any equity
interest in any entity.

         4.2.     Authorization and Binding Obligation. All action on the part
of the Company, its Management Committee and Members necessary for the
authorization, execution, delivery and performance of this Agreement and the
Related Agreements, the performance of all obligations of the Company hereunder
and thereunder, and the authorization, sale, issuance and delivery of the
Purchase Units has been taken. This Agreement and the Related Agreements have
been duly executed and delivered by the Company and constitute valid and legally
binding obligations of the Company enforceable in accordance with their terms,
except as such enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium, fraudulent conveyance and other similar laws from
time to time in effect affecting the


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enforcement of creditors' rights generally, and except as enforcement of
remedies may be limited by general equitable principles. The Purchase Units are
not subject to any preemptive rights or rights of first refusal, except for such
preemptive rights as have been waived hereunder solely for purposes of this
transaction or as set forth in the Restated LLC Agreement.

         4.3.     Absence of Conflicting Agreements; Noncontravention. The
execution, delivery and performance of this Agreement and the Related Agreements
by the Company and the consummation of the transactions contemplated hereby
(with or without the giving of notice, the lapse of time or both): (a) will not
conflict with or result in any violation or default of any provision of the
Certificate of Formation or Restated LLC Agreement of the Company; (b) will not
conflict with, result in a breach of, or constitute a default under, any
applicable law, rule or regulation, judgment, order, ordinance, injunction or
decree of any court or governmental instrumentality; and (c) will not conflict
with, constitute grounds for termination of, result in a breach of, constitute a
default under, or accelerate or permit the acceleration of any performance
required by the terms of, any material agreement, instrument, franchise,
certificate, license or permit to which the Company is a party or may be bound
or by which its business or assets are affected. Assuming the accuracy of the
representations of ATCHI set forth in Article 5 hereof, no consent, approval,
qualification, order or authorization of, or filing with, any local, state, or
federal governmental authority is required on the part of the Company in
connection with the Company's valid execution, delivery, or performance of this
Agreement, or the offer, sale or issuance of the Purchase Units.

         4.4.     Membership Interests and Capital Accounts. Schedule 4.4 is a
true and complete list of the Company's Members and their respective Membership
Interests, Capital Accounts and Unit holdings immediately prior to and
immediately after (assuming the KPCB Purchase) the Subscription Closing. All
issued and outstanding Units representing the Company's Membership Interests (a)
have been duly authorized and validly issued and (b) were issued in compliance
with all applicable state and federal laws concerning the issuance of
securities. Except as provided in the Restated LLC Agreement and the exhibits
thereto, the Company is not a party to any outstanding options, warrants, rights
(including conversion or preemptive rights and rights of first refusal), proxy,
voting or member agreements, nor are there any other agreements of any kind to
which the Company is a party or, to its knowledge, which apply to the purchase
or acquisition of any of its securities. Except as provided in the Registration
Rights Agreement, the Company is not presently under any obligation and has not
granted any rights to register under the Securities Act any of its presently
outstanding securities or any of its securities that may subsequently be issued.

         4.5.     Financial Statements. The Company has delivered to ATCHI the
following financial statements (collectively, the "Financial Statements"): (a)
the unaudited balance sheet and statement of operations and cash flows for the
Company as of and for the fiscal year ended December 31, 1998, and (b) the
unaudited balance sheet (the "July Balance Sheet") and statement of operations
and cash flows for the Company as of and for the six months ended July 31, 1999.
The Financial Statements (a) are in accordance with the books and records of the
Company (which books and records are complete and correct in all material
respects),


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(b) have been prepared in accordance with generally accepted accounting
principles applied on a consistent basis throughout the periods indicated, and
(c) fairly present the financial condition and operating results of the Company
as of the dates and during the periods indicated therein, except that the
unaudited Financial Statements may not be in accordance with GAAP because of the
absence of footnotes normally contained therein and are subject to normal
recurring year-end audit adjustments which are not, individually or in the
aggregate, expected to be material.

         4.6.     Absence of Undisclosed Liabilities. Except as set forth on
Schedule 4.6, the Company has no material liabilities, contingent or otherwise,
other than (a) liabilities shown on the face of the July Balance Sheet, (b)
liabilities incurred in the ordinary course of business subsequent to July 31,
1999, and (c) obligations under contracts and commitments incurred in the
ordinary course of business and not required under generally accepted accounting
principles to be reflected in the Financial Statements, which, in both cases,
individually or in the aggregate, are not material to the financial condition or
operating results of the Company.

         4.7.     Absence of Certain Changes or Events. Since July 31, 1999,
other than as set forth on Schedule 4.7 hereto and other than as set forth in
the Restated LLC Agreement and the Related Agreements, there has not been:

                  (a)      any change in the assets, liabilities, condition
(financial or otherwise), affairs, earnings, business, or operations of the
Company, except changes in the ordinary course of business which have not been,
either in any case or in the aggregate, materially adverse;

                  (b)      any change, except in the ordinary course of
business, in the contingent obligations of the Company by way of guaranty or any
assurance of performance or payment, endorsement, indemnity, warranty or
otherwise;

                  (c)      any damage, destruction or loss, whether or not
covered by insurance, materially and adversely affecting the properties or
business of the Company, taken as whole;

                  (d)      any waiver by the Company of a valuable right or of a
material debt owed to it;

                  (e)      any loans made by the Company to its employees,
officers or directors other than advances of expenses made in the ordinary
course of business;

                  (f)      any distribution of the assets of the Company or any
direct or indirect redemption, purchase or acquisition of any of the Company's
Units;

                  (g)      any labor organization activity or labor trouble;

                  (h)      any other event or condition of any character which
has materially and adversely affected the business, condition, affairs,
operations, properties or assets of the Company;


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                  (i)      any material increases in the compensation of any of
the Company's employees, officers or directors;

                  (j)      any resignation or termination of employment of any
officer or key employee of the Company;

                  (k)      any satisfaction or discharge of any lien, claim or
encumbrance or payment of any obligation by the Company, except in the ordinary
course of business and which is not material to the business, properties or
financial condition of the Company;

                  (l)      any material change to a Material Contract or
material arrangement by which the Company or any of its assets is bound or
subject;

                  (m)      any sale, assignment or transfer of any material
patents, trademarks, copyrights, trade secrets or other intangible assets;

                  (n)      any mortgage, pledge, transfer of a security interest
in, or lien created by the Company with respect to any of its material
properties or assets; or

                  (o)      any agreement entered into by the Company to do any
of the foregoing matters covered by Sections 4.7(a) through 4.7(n).

         4.8.     Title to Properties and Assets; Liens, etc. The Company has
good title to, or a valid leasehold interest in, all its material properties and
assets, including all properties and assets reflected in the July Balance Sheet,
except those disposed of since the date thereof in the ordinary course of
business, and none of such properties or assets is subject to any mortgage,
pledge, lien, encumbrance or charge, other than the lien of current taxes,
assessments, governmental charges or levies not yet due and payable and the
mortgages, pledges, liens, encumbrances and charges set forth in Schedule 4.7
("Permitted Encumbrances"). The Company does not own, and has never owned, any
real property.

         4.9.     Intellectual Property.

                  (a)      The Company owns, free and clear of all security
interests, liens, encumbrances or other charges (except for Permitted
Encumbrances), or has the valid right to use, all Intellectual Property (as
defined below in this Section 4.9) used by it in its business as currently
conducted or as currently proposed by it to be conducted. Except as set forth on
Schedule 4.9, no other person or entity (other than licensors of software that
is generally commercially available, and their respective other licensees, and
licensors of Intellectual Property under the agreements disclosed pursuant to
paragraph (d) below, and their respective other licensees) has any rights to any
of the Intellectual Property owned or used by the Company, and, to the knowledge
of the Company, no other person or entity is infringing, violating or
misappropriating any of the Intellectual Property that the Company owns. For
purposes of this Agreement, "Intellectual Property" means all (i) patents,
patent applications, patent disclosures and all related continuation,
continuation-in-part, divisional, reissue, reexamination, utility model,
certificate of invention and design patents, patent applications,


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registrations and applications for registrations, (ii) trademarks, service
marks, trade dress, logos, trade names, corporate names, domain names and URLs,
and registrations and applications for registration thereof, (iii) copyrights
and registrations and applications for registration thereof, (iv) trade secrets
and confidential business information, whether patentable or unpatentable and
whether or not reduced to practice, know-how, manufacturing and production
processes and techniques, research and development information, copyrightable
works, financial marketing and business data, pricing and cost information,
business and marketing plans and customer and supplier lists and information,
and (v) other proprietary rights relating to any of the foregoing.

                  (b)      None of the activities or business conducted by the
Company infringes, violates or constitutes a misappropriation of any
Intellectual Property of any other person or entity and, to the Company's
knowledge, none of the activities or business currently proposed to be conducted
by the Company infringes, violates or constitutes a misappropriation of any
Intellectual Property of any person or entity. Other than as set forth on
Schedule 4.9, the Company has not received any complaint, claim or notice
alleging any such infringement, violation or misappropriation, and to the
knowledge of the Company, there is no reasonable basis for any such complaint,
claim or notice.

                  (c)      Schedule 4.9(c) identifies (i) each patent that has
been issued or assigned to the Company with respect to any of its Intellectual
Property, (ii) each pending patent application that the Company has made with
respect to any of its Intellectual Property, and (iii) each copyright
registration or application, each trademark registration or application, and
each domain name registration or application with respect to the Company's
Intellectual Property. The contracts designated on Schedule 4.11 as relating to
this Section 4.9(c) include all of the material licenses or other agreements
pursuant to which the Company has granted any rights to any third party with
respect to any of its Intellectual Property.

                  (d)      Schedule 4.9(d) identifies each agreement with third
parties pursuant to which the Company obtains rights to Intellectual Property
material to the business of the Company (other than software that is generally
commercially available) that is owned by a party other than the Company. The
contracts designated on Schedule 4.11 as relating to this Section 4.9(d) include
additional license agreements and distribution agreements with third parties
pursuant to which the Company obtains rights to Intellectual Property material
to the business of the Company that is owned by a party other than the Company.
Other than license fees for software that is generally commercially available or
license fees due to third parties pursuant to the agreements appropriately
designated on Schedule 4.9(d) and Schedule 4.11, the Company is not obligated to
pay any royalties or other compensation to any third party in respect of its
ownership, use or license of any of its Intellectual Property.

                  (e)      The Company has taken reasonable precautions (i) to
protect its rights in its Intellectual Property and (ii) to maintain the
confidentiality of its trade secrets, know-how and other confidential
Intellectual Property, and to the Company's knowledge, there have been no acts
or omissions (other than those made based on reasonable, good faith business
decisions) by the officers, directors, shareholders and employees of the Company
the result of


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which would be to materially compromise the rights of the Company to apply for
or enforce appropriate legal protection of the Company's Intellectual Property.

                  (f)      All of the Company's owned Intellectual Property has
been created by employees of the Company within the scope of their employment by
the Company or by independent contractors of the Company who have executed
agreements expressly assigning all right, title and interest in such
Intellectual Property to the Company. Except as set forth on Schedule 4.9(f), no
portion of the Company's owned Intellectual Property was jointly developed with
any third party. The Company does not believe it is or will be necessary to use
any inventions of any of its employees (or persons it currently intends to hire)
made prior to their employment by the Company.

         4.10.    Compliance with Other Instruments. The Company is not in
violation of any term of its Restated LLC Agreement, or in any material respect
of any term or provision of any material mortgage, evidence of indebtedness,
indenture, contract, agreement, instrument, judgment or decree, order, statute,
rule or regulation applicable to the Company or to which its properties is
subject.

         4.11.    Material Contracts and Obligations. Schedule 4.11 sets forth a
list of all material agreements or commitments of any nature to which the
Company is a party or by which it is bound ("Material Contracts"), including
without limitation:

                  (a)      Any agreement which requires future expenditures by
the Company in excess of $50,000 or which might result in payments to the
Company in excess of $50,000.

                  (b)      Any employment and consulting agreements, employee
benefit, bonus, pension, profit-sharing, stock option, stock purchase and
similar plans and arrangements.

                  (c)      Any material distributor or sales representative
agreement.

                  (d)      Any material agreement relating to the acquisition,
transfer, distribution, use, development, sharing or license of any technology
or Intellectual Property.

                  (e)      Any material agreement relating to hyperlinks,
co-branded sites, affiliations, barters, revenue sharing, advertising sales,
data distribution or data acquisition or content.

                  (f)      Any agreement with any current or former member,
officer or director of the Company, or any "affiliate" or "associate" of such
persons (as such terms are defined in the rules and regulations promulgated
under the Securities Act), including without limitation any agreement or other
arrangement providing for the furnishing of services by, rental of real or
personal property from, or otherwise requiring payments to, any such person or
entity.

                  (g)      Any agreement under which the Company is restricted
or limited in any material respect from carrying on any business or other
services anywhere in the world.


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                  (h)      Any agreement relating to indebtedness for borrowed
money or evidencing a security interest or mortgage in the assets of the
Company.

                  (i)      Any guaranty issued by the Company.

                  (j)      Any agreement relating to the acquisition, issuance
or transfer of any Units or securities of the Company other than the Restated
LLC Agreement and the Related Agreements.

                  (k)      Any agreement relating to the acquisition or
disposition of a material portion of the Company's assets.

                  (l)      Any agreement for the acquisition of the business or
shares of another party.

                  (m)      Any outstanding offer, commitment or obligation to
enter into any agreement of the nature described in subsections (a) through (l)
of this Section 4.11.

The Company or its counsel has delivered or made available to ATCHI's counsel
copies of each of the foregoing agreements; provided, however, that the Company
shall not be obligated to provide to ATCHI copies of any employee benefit plans
with respect to which the Company shall not retain any liability after the
Closing. All of such agreements are valid, binding and in full force and effect.
Neither the Company, nor, to the Company's knowledge, any other party thereto,
is in default of any of its obligations under any of such agreements in a manner
which could have a material adverse effect on the Company.

         4.12.    Taxes. The amount shown on the July Balance Sheet as provision
for taxes is sufficient in all material respects for payment of all accrued and
unpaid federal, state, county, local and foreign taxes for the period then ended
and all prior periods. The Company has filed or has obtained presently effective
extensions with respect to all federal, state, county, local and foreign tax
returns which are required to be filed by it, such returns are true and correct
in all material respects and all taxes shown thereon to be due have been timely
paid with exceptions not material to the Company. Federal income tax returns of
the Company have not been audited by the Internal Revenue Service, and no
controversy with respect to taxes of any type involving or related to the
Company is pending or, to the best of the Company's knowledge, threatened. The
Company has withheld or collected from each payment made to its partners or
employees the amount of all taxes required to be withheld or collected therefrom
and has paid all such amounts to the appropriate taxing authorities when due.
The Company qualifies (and has since the date of its formation qualified) and,
giving effect to the terms of the Restated LLC Agreement, will qualify
immediately after the Closing Date, to be treated as a partnership for federal
income tax purposes and none of the Company or any member or any taxing
authority has taken a position inconsistent with such treatment.

         4.13.    Claims and Legal Actions. There are no actions, suits,
proceedings or investigations pending against the Company or its properties
before any court or governmental agency (nor to the best of the Company's
knowledge, is there any threat thereof, except for


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any proceedings generally affecting the Internet industry). The Company is not a
party to or subject to any writ, order, injunction, decree or judgment and there
is no action, suit, proceeding or investigation by the Company currently pending
or which the Company currently intends to originate.

         4.14.    Compliance with Laws; Permits. The Company is not nor has it
been in violation of (nor would any policy, procedure or practice of the Company
be reasonably expected to result in a violation of), or delinquent in respect
to, any statute, rule, regulation, order, restriction, decree, arbitration
award, or any agreement with, or any license or permit from, any domestic or
foreign government or any instrumentality or agency thereof in respect of the
conduct of the Company's business or the ownership of its properties which
violation has or would reasonably be expected to materially and adversely affect
the business, assets, liabilities, financial condition, operations of the
Company. Without limiting the foregoing, the Company is not nor has it been in
violation of any applicable statute, law or regulation relating to the
environment or occupational health and safety, and to its knowledge, no material
expenditures are or will be required in order to comply with any such applicable
statute, law or regulation. The Company has all franchises, permits, licenses
and any similar authority necessary for the conduct of its business as now being
conducted by it, the lack of which could materially and adversely affect the
business, properties or financial condition of the Company, and the Company has
no knowledge or belief that it will not be able to obtain, without undue burden
or expense, any similar authority for the conduct of its business as proposed to
be conducted under the Company's current business plan. The Company is not in
default in any material respect under such franchises, permits, licenses or
other similar authority.

         4.15.    Employees; Employee Benefits. To the best of the Company's
knowledge, no employee or consultant of the Company is in violation of any
material term of any employment contract or any other contract or agreement
relating to the relationship of any employee or consultant with the Company or
any other party because of the nature of the business conducted by the Company.
The Company does not have any collective bargaining agreements covering any of
its employees and there is no strike or labor dispute or union organization
activities pending or threatened. The Company has not received notice and has no
knowledge otherwise that any key employee of the Company has any plans to
terminate his or her employment with the Company, nor does the Company have a
present intention, except as previously disclosed to ATCHI by the Company, to
terminate the employment of any key officer. Except as set forth on Schedule
4.15, the Company does not have any deferred compensation, pension, profit
sharing, bonus, insurance, severance or other similar employee benefit plan or
obligation covering any of its employees or any plan subject to the Employee
Retirement Income Security Act of 1974. The Company has complied in all material
respects with all applicable state and federal equal employment opportunity and
other laws relating to employment. Except for Schedule 4.15, the Company's
obligations to its independent contractors or consultants are limited to payment
of fees for services rendered. Except as may be set forth in Schedule 4.15,
subject to general principles related to wrongful termination, the employment of
each officer and employee of the Company is terminable at the will of the
Company.


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         4.16.    Insurance. The Company maintains or is covered by valid
policies of workers' compensation insurance, directors' and officers' liability
insurance, and of insurance with respect to its properties and business of the
kinds and in the amounts that the Company believes is reasonable, including,
without limitation, insurance against loss, damage, fire, theft, public
liability and other risks.

         4.17.    Brokers or Finders; Other Offers. The Company has not
incurred, and will not incur, directly or indirectly, as a result of any action
taken by the Company, any liability for brokerage or finders' fees or agents'
commissions or any similar charges in connection with this Agreement.

         4.18.    Related-Party Transactions. Except as set forth on Schedule
4.18, to the Company's knowledge, no member, Broad Affiliate of a member
(defined below), manager or officer of the Company (each, a "Related Party") has
any direct or indirect ownership interest in any firm or corporation with which
the Company has a material business relationship (or any firm or corporation
that competes with the Company), nor does any such Related Party receive any
material benefit from any material contract with the Company (other than such
contracts as relate to any such person's ownership interest in the Company). For
purposes of this Section 4.18, "Broad Affiliate" has the meaning given such term
in the Restated LLC Agreement.

         4.19.    No Bankruptcy. The Company is not bankrupt or insolvent, nor
is it a party to any current or threatened bankruptcy, insolvency or similar
proceeding.

         4.20.    No Guarantees. The Company has not guaranteed the obligations
or liabilities of any other person, firm or corporation.

         4.21.    Veracity. No representation or warranty of the Company
contained in this Agreement contains any untrue statement of a material fact or
omits to state a material fact necessary in order to make the statements
contained herein, in light of all the circumstances under which they were made,
not misleading, and there is no fact or condition known to the Company which has
not been disclosed in writing to ATCHI that has had or would reasonably be
likely to have a material adverse effect on the Company's ability to perform its
material obligations under this Agreement.

5.       REPRESENTATIONS AND WARRANTIES OF ATCHI

In order to induce the Company to enter into this Agreement, ATCHI represents
and warrants to the Company that the statements contained in this Article 5 are
correct and complete as of the date of this Agreement.

         5.1.     Authorization. This Agreement when executed and delivered by
ATCHI will constitute a valid and legally binding obligation of ATCHI,
enforceable in accordance with its terms, except as such enforceability may be
limited by bankruptcy, insolvency, reorganization, moratorium, fraudulent
conveyance and other similar laws from time to time in effect affecting the
enforcement of creditors' rights generally, and except as enforcement of
remedies may be


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limited by general equitable principles. All consents necessary, if any, to
authorize ATCHI to enter into this Agreement and the Related Agreements have
been obtained.

         5.2.     Experience. ATCHI has substantial experience in evaluating and
investing in private placement transactions so that ATCHI is capable of
evaluating the merits and risks of ATCHI's investment in the Company. ATCHI, by
reason of its business or financial experience or the business or financial
experience of its professional advisors who are unaffiliated with and who are
not compensated by the Company or any affiliate or selling agent of the Company,
directly or indirectly, has the capacity to protect its own interests in
connection with the purchase of the Units hereunder.

         5.3.     Investment. ATCHI is acquiring the Purchase Units for
investment for ATCHI's own account, not as a nominee or agent, and not with the
view to, or for resale in connection with, any distribution thereof. ATCHI
understands that the Units to be purchased have not been, and may not be,
registered under the Securities Act of 1933 (the "Securities Act") or the
securities laws of any state ("Blue Sky Laws") by reason of a specific exemption
or exemptions from the registration provisions of the Securities Act or Blue Sky
Laws which depends upon, among other things, the bona fide nature of the
investment intent and the accuracy of ATCHI's representations as expressed
herein.

         5.4.     Accredited Investor. ATCHI represents that it is an
"accredited investor" as such term is defined in Rule 501 promulgated under the
Securities Act.

         5.5.     Rule 144. ATCHI acknowledges that the Units must be held
indefinitely unless subsequently registered under the Securities Act and
applicable Blue Sky Laws or an exemption from such registration is available.

         5.6.     Brokers or Finders. The Company has not incurred, and will not
incur, directly or indirectly, as a result of any action taken by ATCHI any
liability for brokerage or finders' fees or agents' commissions or any similar
charges in connection with this Agreement.

6.       CONDITIONS TO CLOSING OF ATCHI

ATCHI's obligation to purchase the Purchase Units at the Subscription Closing is
subject to the fulfillment as of the Closing Date of the following conditions:

         6.1.     Contribution Closing. The closing of the Contribution
Transaction shall have been consummated in accordance with the terms of the
Contribution Agreement and the Restated LLC Agreement shall be in full force and
effect.

         6.2.     Authorization. All action on the part of the Company, its
Management Committee and Members necessary for the authorization, execution,
delivery and performance of this Agreement and the Related Agreements, the
authorization, sale, issuance and delivery of the Purchase Units, and the
performance of all of the Company's obligations hereunder and under the Related
Agreements shall have been taken in accordance with and as required by the
Company's Restated LLC Agreement.


                                       11
<PAGE>   12


         6.3.     Representation and Warranties. The representations and
warranties made by the Company in Section 4 hereof shall be true and correct in
all material respects when made, and shall be true and correct in all material
respects on the Closing Date with the same force and effect as if they had been
made on and as of said date. The President of the Company shall deliver to ATCHI
at the Subscription Closing a certificate certifying that the conditions
specified in Sections 6.1 through 6.4 have been fulfilled.

         6.4.     Covenants. All covenants, agreements and conditions contained
in this Agreement to be performed by Company on or prior to the Closing Date
shall have been performed or complied with in all material respects.

         6.5.     Opinion of Company's Counsel. ATCHI shall have received from
Dow, Lohnes & Albertson, PLLC, an opinion addressed to it dated the Closing
Date, in the form attached hereto as Exhibit A.

         6.6.     Consents and Waivers. The Company shall have obtained any and
all material consents (including but not limited to governmental or regulatory
consents or approvals) permits and waivers applicable to the Company necessary
or appropriate for the consummation of the transactions contemplated by this
Agreement and the Related Agreements.

         6.7.     KPCB Purchase. The closing of the purchase by KPCB Holdings,
Inc. ("KPCB") from the Company of 139,752 Class A Units (7.5%) for
$12,111,801.24 (the "KPCB Purchase") shall close contemporaneously with the
Subscription Closing, on terms and conditions no more favorable to KPCB than the
terms of ATCHI's investment.

7.       MISCELLANEOUS

         7.1.     Survival. The covenants made herein shall survive the closing
of the transactions contemplated hereby. All representations and warranties
shall survive the closing of the transactions contemplated hereby for the
survival period set forth in the Contribution Agreement.

         7.2.     Notices. All notices and other communications hereunder shall
be (a) in writing; (b) delivered by telecopy, by commercial overnight or
same-day delivery service with all delivery costs paid by sender, or by
registered or certified mail with postage prepaid, return receipt requested; (c)
deemed given on the date and at the time shown on the telecopy confirmation of
receipt (if delivered by telecopy), on the date and at the time (if recorded) of
delivery by the commercial delivery service, as shown in the records thereof (if
delivered by commercial overnight or same-day delivery service), or on the date
shown on the return receipt (if delivered by registered or certified mail); and
(d) addressed to the parties at their addresses specified on the signature page
to this Agreement (or at such other address for a party as shall be specified by
like notice).

         7.3.     Waiver. Any waiver of any terms or conditions of this
Agreement shall be in writing and shall not operate as a waiver of any other
breach of such terms or conditions or


                                       12
<PAGE>   13


any other term or condition, nor shall any failure to enforce any provision of
this Agreement operate as a waiver of such provision or of any other provision
of this Agreement.

         7.4.     Captions; Partial Invalidity. The captions, section numbers
and index appearing in this Agreement are inserted only as a matter of
convenience and in no way define, limit, construe or describe the scope or
intent of such sections or articles of this Agreement, nor in any way affect
this Agreement.

         7.5.     Counterparts. This Agreement may be executed in counterparts
each of which shall be deemed an original and all of which together shall
constitute one and the same instrument, and in pleading or proving any provision
of this Agreement, it shall not be necessary to produce more than one complete
set of such counterparts. Any counterpart of this Agreement which has attached
to it separate signature pages, which together contain the signatures of all
parties hereto, shall for all purposes be deemed a fully executed original.

         7.6.     Variations of Pronouns; Number; Gender. All pronouns and all
variations thereof shall be deemed to refer to the masculine, feminine or
neuter, singular or plural, as the identity of the person or persons or entity
may require. Whenever used herein the singular number shall include the plural,
the plural shall include the singular, and the use of any gender shall include
all genders.

         7.7.     Governing Law; Construction. This Agreement shall be governed
by and construed in accordance with the substantive laws of the State of
Delaware without regard to its conflict of laws provisions. The parties
acknowledge and agree that they have been represented by counsel and that each
of the parties has participated in the drafting of this Agreement. Accordingly,
it is the intention and agreement of the parties that the language, terms and
conditions of this Agreement are not to be construed in any way against or in
favor of any party hereto by reason of the responsibilities in connection with
the preparation of this Agreement.

         7.8.     Third Parties. None of the provisions of this Agreement shall
be for the benefit of, or enforceable by, any employee or creditor of any party
hereto, nor any other person not a party hereto.

         7.9.     Entire Agreement. This Agreement and all of the Related
Agreements and exhibits attached hereto shall constitute the entire agreement of
the parties hereto; all prior agreements between the parties, whether written or
oral, are merged herein and shall be of no force and effect; and there are no
restrictions, agreements, representations, warranties, arrangements, or
undertakings, oral or written, between or among the parties relating to the
transactions contemplated hereby which are not fully expressed or referred to
herein. This Agreement cannot be changed, modified or discharged orally, but
only by an agreement in writing, signed by the party against whom enforcement of
the change, modification or discharge is sought.

         7.10.    Benefit and Binding Effect. Other than in connection with a
pledge, assignment or other transfer of all or any of its interest in the
Company that is permitted by the Operating


                                       13
<PAGE>   14


Agreement, none of the parties hereto may assign the rights under or delegate
any duties under this Agreement without the prior written consent of the other
parties hereto. This Agreement shall be binding upon and inure to the benefit of
the parties hereto and their respective successors and permitted assigns.

         7.11.    Expenses. Except as otherwise expressly provided, the Company
and ATCHI shall each bear its own expenses incurred on its behalf with respect
to this Agreement and the transactions contemplated thereby.

         7.12.    Severability. In the event that any provision of this
Agreement becomes or is declared by a court of competent jurisdiction to be
illegal, unenforceable or void, this Agreement shall continue in full force and
effect without said provision; provided that no such severability shall be
effective if it materially changes the economic benefit of this Agreement to any
party.



                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                       14
<PAGE>   15



         IN WITNESS WHEREOF, this Agreement has been executed by the parties
hereto as of the date first above written.

                                    COMPANY:

                                    AUTOCONNECT, L.L.C.

                                    By: /s/ Dennis Berry
                                        ----------------------------------------
                                    Name: Dennis Berry
                                          --------------------------------------
                                    Title: Member of Management Committee
                                           -------------------------------------

                                    Address for Notices:

                                    1400 Lake Hearn Drive, N.E.
                                    Atlanta, Georgia  30319
                                    Attention:  Victor A. Perry, III
                                    Facsimile:  (404) 843-5755

                                    MANHEIM:

                                    MANHEIM AUCTIONS, INC.

                                    By: /s/ Dennis Berry
                                        ----------------------------------------
                                    Name: Dennis Berry
                                          --------------------------------------
                                    Title: President
                                           -------------------------------------

                                    Address for Notices:

                                    1400 Lake Hearn Drive, N.E.
                                    Atlanta, Georgia  30319
                                    Attention:  G. Dennis Berry
                                    Facsimile:  (404) 843-5755

                                    ADP:

                                    ADP, INC.

                                    By: /s/ Allan Stejskal
                                        ----------------------------------------
                                    Name: Allan Stejskal
                                          --------------------------------------
                                    Title: V.P. Dealer Services
                                           -------------------------------------


                                       15
<PAGE>   16

                                    Address for Notices:

                                    1950 Hassell Road
                                    Hoffman Estates, Illinois  60195
                                    Attention:  President
                                    Facsimile:  (847) 781-9873

                                    ATCHI:

                                    ATC HOLDINGS, INC.


                                    By: /s/ Guy R. Friddell, III
                                        ----------------------------------------
                                    Name: Guy R. Fridell, III
                                          --------------------------------------
                                    Title: Vice President
                                           -------------------------------------

                                    Address for Notices:

                                    ATC Holdings, Inc.
                                    3228 Channel 8 Drive
                                    Las Vegas, Nevada  89109
                                    Attention:  President
                                    Facsimile: 702-792-9034
                                               ---------------------------------

                                    with a copy to:

                                    Landmark Communications, Inc.
                                    150 W. Brambleton Avenue
                                    Norfolk, VA 23510-2075
                                    Attention:  Guy R. Friddell, III, Esquire
                                    Facsimile:  (757) 664-2164


                                       16