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                                                                   EXHIBIT 10.3
                                PROMISSORY NOTE

$2,325,000.00                                                      MAY 17, 2000

         FOR VALUE RECEIVED, Mark Kapper (the "Debtor"), hereby promises to pay
to PROFESSIONAL TRANSPORTATION GROUP LTD., INC. (hereinafter referred to as the
"Payee"), or assigns the principal sum of Two Million, Three Hundred
Twenty-Five Dollars ($2,325,000.00) together with interest on the unpaid
principal balance at a rate of six and one-half percent (6.5%) per annum, with
interest only payable on the first and second anniversaries of this Promissory
Note, and with all remaining principal and interest payable on the third
anniversary of this Promissory Note. Debtor may prepay this Note at any time.
All payments shall be made in United States dollars, except at the election of
the Debtor, all or a portion of the Collateral as described below may be used
as payment in the Debtor's sole discretion, and in the event that the Debtor so
elects, each share of stock constituting the Collateral shall be deemed to have
a value of $5.00 per share, which amount shall be adjusted for any stock split,
recapitalization, etc.

         If any deficiency in the payment of any installment under this note is
not made good prior to ten business days after same becomes due and payable,
the entire balance and accrued interest shall at once become due and payable
without notice at the option of the holder of this Note. Failure to exercise
this option shall not constitute a waiver of the right to exercise the same in
the event of any subsequent default.

         Presentment, demand and protest, and notices of protest, dishonor, and
non-payment of this note and all notices of every kind are hereby waived.

         No single or partial exercise of any power hereunder shall preclude
the other or further exercise thereof or the exercise of any other power. No
delay or omission on the part of the holder hereof in exercising any right
hereunder shall operate as a waiver of such right or of any other right under
this Note.

         If any amount owing under this Note is not paid when due, the
undersigned promises to pay all costs of collection including, but not limited
to, reasonable attorneys' fees and court costs incurred by the holder hereof on
account of such collection, whether or not suit is filed hereon.

         Notwithstanding anything to the contrary in this Note or the Stock
Pledge Agreement of even date herewith (which together with this Promissory
Note is collectively called "the Loan Documents"), the liability and obligation
of the Debtor to perform the obligations contained in the Loan Documents, shall
not be enforced by any action or proceeding pursuant to which damages or any
money judgment or any deficiency judgment or any judgment establishing any
personal obligation or liability shall be sought, collected or otherwise
obtained against the Debtor. The Payee for itself and its successors and
assigns, irrevocably waives any and all right to sue for, seek or demand any
such damages, money judgment, deficiency judgment or personal judgment against
the Debtor, on account of any obligation to the Payee under the Loan Documents,
and agrees to look solely to the property held by it as collateral pursuant to
the Loan Documents (the collateral being

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called the "Collateral") for the enforcement of such obligation of the Debtor
under the Loan Documents. Nothing contained in this Section shall be construed
(i) as preventing the Payee from naming the Debtor in any action or proceeding
brought by the Payee to enforce and to realize upon the Collateral (or any part
thereof or interest therein) so long as no judgment, order, decree or other
relief in the nature of a personal or deficiency judgment or otherwise
establishing any personal obligation shall be asked for, taken, entered or
enforced against the Debtor, in any such action or proceeding, (ii) as
modifying, qualifying or affecting in any manner whatsoever the lien and
security interests created by the Loan Documents or the enforcement thereof by
the Payee; (iii) as modifying, qualifying or affecting in any manner whatsoever
the personal recourse undertakings, obligations and liabilities of the Debtor;
or (iv) as modifying, qualifying or affecting in any manner whatsoever the
personal recourse liability of the Debtor, or any other person, party or
entity, for fraud or willful misrepresentation or any wrongful misappropriation
or diversion of the Collateral (or any part thereof or interest therein).

         This Promissory Note shall be deemed to be a contract made under the
laws of the State of Georgia and shall be governed by and construed in
accordance with the internal laws thereof.

                                             /s/ Mark Kapper
                                             ----------------------------------
                                             Mark Kapper<PAGE>   1

                                                                   EXHIBIT 10.4
                             STOCK PLEDGE AGREEMENT

         THIS STOCK PLEDGE AGREEMENT (the "Agreement") is dated as of May 17,
2000 by and between Mark Kapper (the "Pledgor") and Professional Transportation
Group Ltd., Inc. (the "Pledgee").

         WHEREAS, contemporaneously with the execution of this Agreement,
Pledgor has executed a promissory note (the "Note") in the amount of
$2,325,000.00 and entered into the Proceeds Agreement pursuant to which Pledgor
may have an obligation to make certain other payments to Pledgee (the "Excess
Payment Obligations"); and

         WHEREAS, the Pledgor has agreed to pledge 465,000 shares of the common
stock of Pledgee titled in Pledgor's name (the "Pledged Shares") as security
for the repayment of the Note and Pledgee's obligations pursuant to the
Proceeds Agreement dated as of the date hereof (collectively, the
"Obligations") and subject to the terms of this Pledge Agreement.

         NOW, THEREFORE, in consideration of the promises and mutual covenants
herein contained, the parties hereto agree as follows:

         1.       PLEDGE OF SHARES. As collateral security for the payment of
the Obligations, Pledgor hereby pledges unto Pledgee the Pledged Shares and
grants a security interest therein together with any proceeds therefrom and all
securities and other property at any time and from time to time receivable or
otherwise distributed in respect of or in exchange for any or all of the
Pledged Shares and/or such additional shares. Pledgor hereby appoints Pledgee
as its attorney to arrange for the transfer of the Pledged Shares on the books
of the Pledgee to the name of Pledgee and will, upon request of Pledgee,
deliver to Pledgee a duly executed stock power relating to the Pledged Shares;
provided, however, that the record ownership of the Pledged Shares shall remain
in Pledgor until the Pledgee exercises its rights pursuant to this Agreement.
Pledgee shall hold the Pledged Shares as security for repayment of the
Obligations and shall not encumber or dispose of the Pledged Shares except in
accordance with the provisions of this Agreement.

         2.       VOTING RIGHTS; STOCK ADJUSTMENTS. During the term of this
Agreement, Pledgee shall have the right to exercise all voting rights
pertaining to the Pledged Shares. In the event that, during the term of this
Agreement, any stock dividend, stock split, combination, subdivision,
reorganization, recapitalization, reclassification, readjustment, or other
change is declared or made in the capital structure of the Company, Pledgor
shall promptly deliver to the Pledgee, all new, substituted, and additional
shares, or other securities, issued by reason of any such change, to be held by
the Pledgee under the terms of this Agreement as part of the Pledged Shares. In
the event that, during the term of this Agreement, subscription warrants or any
other rights or warrants shall be issued in respect to the Pledged Shares and
exercised by Pledgor, all new stock or other securities acquired by Pledgor
shall be immediately assigned to Pledgee to be held under the terms of this
Agreement as part of the Pledged Shares.

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         3.       PAYMENT OF NOTE. Upon payment or satisfaction of the
Obligations, Pledgee shall transfer to Pledgor all of the Pledged Shares.

         4.       REMEDIES UPON DEFAULT OR BREACH. Upon the occurrence of an
Event of Default under the Note or upon a breach of Pledgor's obligations
pursuant to the Proceeds Agreement, Pledgee may, upon 15 days notice to the
Pledgor sent by registered mail, redeem the Pledged Shares in payment of the
Obligations in its sole discretion, free from any right or equity of
redemption. In addition, Pledgee shall have the following remedies available to
it:

                  (a)      Pledgee may cause title to the Collateral then in
Pledgee's possession to be transferred to Pledgee by virtue of the blank
power(s) for the conveyance of the Collateral to Pledgee; and

                  (b)      Subject to the requirements of applicable law, and
without limiting any rights otherwise available hereunder or under law, sell,
assign and deliver all of the Collateral at public or private sale for cash, on
credit or for other property, for immediate or future delivery, without any
assumption of credit risk, and for such price and upon such terms as are
commercially reasonable.

         Any sale of the Collateral or any portion thereof shall be subject to
compliance with applicable securities laws and rules and regulations
thereunder. Pledgee shall be authorized at any such sale to restrict the
prospective bidders or Pledgor to persons who will represent and agree that
they are purchasing the Collateral for their own account, for investment and
not with a view to the distribution or sale thereof, and upon consummation of
any such sale.

         Each such purchaser at any such sale shall hold the property sold
absolutely free from any claim or right on the part of Pledgor, and Pledgor
hereby waives (to the extent permitted by law) all rights of redemption, stay
or appraisal that Pledgor now has or may at any time in the future have under
any rule of law or statute now existing or hereafter enacted.

         If notice of intended disposition of the Collateral is required by
law, such notice shall be deemed reasonable and proper if given to Pledgor at
least 15 days prior to such disposition stating Pledgee's intention to make any
such public or private sale. Any such notice, in case of public sale, shall
state the time and place for such sale. Any such public sale shall be held at
such time or times within ordinary business hours and at such place or places
as Pledgee may fix and shall state in the notice of such sale. At any such
sale, all of the Collateral, or portion thereof, to be sold may be sold in one
lot as an entirety or in separate parcels, as Pledgee may (in Pledgee's sole
and absolute discretion) determine.

         Pledgee shall not be obligated to make any sale of the Collateral if
Pledgee shall determine not to do so, regardless of the fact that notice of
sale of the Collateral may have been given. Pledgee may, without notice or
publication, adjourn any public or private sale or cause the same to be
adjourned from time to time by announcement at the time and place fixed for
sale, and such sale may, without further notice, be made at the time and place
to which the same was so adjourned.

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         In case sale of all or any part of the Collateral is made on credit or
for future delivery, the Collateral so sold may be retained by Pledgee until
the sale price is paid by the Pledgor thereof, but Pledgee shall not incur any
liability in case any such purchaser shall fail to take up and pay for the
Collateral so sold and, in case of any such failure, such Collateral may be
sold again upon like notice.

         (c)      Notwithstanding the foregoing and without regard to the fair
market value of the Collateral and/or the purchase price offered by a third
party, the Pledgee or the Pledgor, the Pledgee acknowledges that it will treat
the value of each share of the Pledged Shares as having a value of $5.00 per
share, or such value as may be determined after taking into account any stock
dividend, stock split, combination, subdivision, reorganization,
recapitalization, reclassification, readjustment, or other change in the
capital structure of the Company.

         5.       SUBSTITUTION OF COLLATERAL; PARTIAL RELEASE. Pledgor may at
any time during the term of this Agreement propose that Pledgee accept as
Collateral unencumbered property of Pledgor having a fair market value and
liquidity equal to or in excess of the Pledged Shares (but not more than $5.00
per share). In the event that the Pledgee agrees to the value and liquidity of
such unencumbered property (the "Substitute Collateral") and consents to accept
the Substitute Collateral (which consent shall not be unreasonably withheld),
the Pledgee shall release to Pledgor the Pledged Shares at such time that the
Pledgee obtains a perfected first priority security interest in the Substitute
Collateral, which shall then become subject to the terms of this Agreement.
Upon the request of Pledgor, Pledgee shall release to Pledgor so much of the
Pledged Shares whose agreed value exceeds the amount of the Obligations.

         6.       MISCELLANEOUS. No failure or delay on the part of any party
in exercising any right, power or remedy hereunder shall operate as a waiver
thereof. The waiver by either party of a breach of any provision of this
Agreement shall not operate or be construed as a waiver of any subsequent
breach. No modification, amendment, termination, waiver or consent under this
Agreement, the Note or the Proceeds Agreement shall be valid unless evidenced
by a writing signed by the party against whom any of the foregoing actions is
sought to be enforced. This Agreement, the Proceeds Agreement and the Note
constitute the entire agreement between the parties and supersedes all prior
proposals and agreements, written or oral, and all other communications between
the parties relating to the subject matter of this Agreement, the Proceeds
Agreement or the Note. The invalidity, illegality or unenforceability of any
provision of this Agreement shall in no way affect the validity, legality or
enforceability of any other provision. This Agreement shall be binding upon and
inure to the benefit of the Pledgee and the Pledgor and their respective
successors and assigns. All notices hereunder shall be in writing and shall be
deemed given when sent by certified or registered mail, postage paid, return
receipt requested. This Agreement shall be governed by and construed in
accordance with the laws of the State of Georgia.

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         IN WITNESS WHEREOF, this Agreement has been executed as an instrument
under seal as of the date and year first above written.

PLEDGEE:                                              PLEDGOR:
PROFESSIONAL TRANSPORTATION
GROUP LTD., INC.

By: /s/ Dennis A. Bakal                               /s/ Mark Kapper
   ------------------------------                     -------------------------
   Dennis A. Bakal, President                         Mark Kapper

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