<PAGE>

                                                                   Exhibit 10.20

                                  AGREEMENT FOR

                             TRANSPORTATION SERVICES

      This Agreement, including Appendices A and B, ("Agreement") is made as of
the 1st day of April, 1990, by and between Toyota Motor Sales, U.S.A., Inc., a
California corporation with its principle place of business at 19001 South
Western Avenue, Torrance, California 90509 ("TMS/USA"); and Allied Systems,
Ltd., a Georgia corporation with its principal place of business at 160
Clairmont Avenue, Suite 600, Decatur, Georgia 30030 ("CARRIER").

      WHEREAS, TMS/USA is a distributor of assembled Toyota motor vehicles in
the continental United States and Alaska; and

      WHEREAS, CARRIER is an independent contractor engaged in the business of
transporting vehicles by motor trucks as a contract carrier in intrastate and
interstate commerce; and

      WHEREAS, TMS/USA desires that CARRIER provide motor truck service for the
shipment of selected motor vehicles ("Vehicles") from designated TMS/USA's
facility(ies) to designated points in the continental United States; and

      WHEREAS, CARRIER desires to provide motor truck service to TMS/USA for the
transportation of Vehicles upon request of TMS/USA;

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

1.0   TERM

      1.1   Term. The term of this Agreement shall be for a period of one (1)
            year commencing on April 4, 1990, and ending on April 4, 1991.

      1.2   Renewal Term. At the end of the Initial Term or of any renewal
            terms, TMS/USA may renew this Agreement on the same terms and
            conditions for an additional one (1) year period by giving CARRIER
            sixty (60) days notice of its intent to renew. It is agreed that
            Toyota may elect not to renew this Agreement without cause and that
            such election has the effect of terminating the obligations of the
            parties at the end of the then existing term, except as to
            obligations which have accrued prior thereto.

      1.3   Adjustment of Rates in Renewal Term.

            a.    Notice of Proposed Rate Adjustment. Either party shall give
                  the other written notice of any proposed adjustment of the
                  rates applicable in a renewal term at least ninety (90) days
                  prior to the expiration of the then existing term. Notice of
                  any proposed adjustment shall be accompanied by a statement of
                  the reason for such adjustment, specifying in detail the cost
                  components of such adjustment. The party requesting rate
                  adjustment

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                                                                   Exhibit 10.20

                  shall also provide to the other sufficient documentation to
                  support the costs claimed and shall have the right to request
                  cost documentation from the other party. The parties agree to
                  negotiate in good faith to reach agreement on new rates.

            b.    Effective Date. In the event new rates are renegotiated in
                  accordance with the provisions of this Agreement, the existing
                  rates shall remain effective until the expiration of the
                  existing term, or sixty (60) days after the new rates are
                  agreed upon in writing, whichever date occurs later.

            c.    No Adjustment. If despite good faith negotiations the parties
                  are unable to agree upon a requested rate adjustment within
                  ninety (90) days of notice of such request, this Agreement
                  shall terminate with respect to all future obligations sixty
                  (60) days after one party gives the other notice of failure to
                  agree on new rates and the then existing rates will remain in
                  effect through such date.

2.0   OBLIGATIONS OF CARRIER

      2.1   Transportation of Vehicles. Subject to the terms and conditions
            contained in this Agreement, TMS/USA agrees to tender selected
            Vehicles to CARRIER for transportation by CARRIER in interstate and
            intrastate commerce to points in the continental United States as
            directed by TMS/USA from the Origin Point(s) to the Destination
            Point(s) as set forth in Appendix A attached hereto. Carrier agrees
            to accept and deliver the Vehicles promptly and efficiently at
            CARRIER's sole cost and expense. Appendix B stipulates the point or
            points where stop-offs, if any, shall be made for partial unloading.
            CARRIER shall not off-load Vehicles at a stop-off point to be
            reloaded as part of a mixed load.

      2.2   Tender of Vehicles. TMS/USA shall tender Vehicles to CARRIER at
            Origin Point. CARRIER shall load, transport, deliver and unload
            Vehicles and shall have care, custody and control of Vehicles from
            time of tender until completion of delivery to Designated
            Destination Points. Vehicles shall be deemed to be tendered at the
            time of actual delivery of a Vehicle to the CARRIER for a load or
            delivery of attendant paperwork to the CARRIER, whichever is later.

      2.3   Subsidiaries. This Agreement is strictly between TMS/USA and
            CARRIER. CARRIER shall load, transport, deliver, and unload Vehicles
            using any subsidiary(ies) that it chooses; however, TMS/USA shall
            only recognize as valid invoices received from CARRIER. Further, any
            claims filed by TMS/USA against CARRIER shall be processed solely by
            CARRIER.

      2.4   Equipment. CARRIER shall, at its sole cost and expense, furnish all
            equipment necessary for the safe and efficient transportation of
            Vehicles and CARRIER shall pay all costs and expenses of every kind
            or nature, in connection with the ownership, use, maintenance and
            operation of any such equipment, including any and all fees for
            licenses or permits and any local, state or federal taxes imposed.

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                                                                   Exhibit 10.20

      2.5   CARRIER Acquisition or Modification of Equipment. CARRIER shall have
            sole responsibility and risk with respect to the acquisition by
            purchase or otherwise or modification or alteration of any equipment
            required for the performance of its obligations pursuant to this
            Agreement. TMS/USA shall have no responsibility to CARRIER with
            respect to the acquisition or modification of equipment other than
            pursuant to the terms of this Agreement.

      2.6   Personnel. CARRIER shall employ competent, able and licensed
            personnel to perform the services required by TMS/USA; and shall
            have the sole responsibility for paying, supervising and controlling
            all such personnel. CARRIER shall have available one (1) or more
            supervisor/dispatcher(s) to coordinate transportation services for
            TOYOTA. CARRIER shall have a yard supervisor onsite during the
            loading of any Vehicle.

      2.7   Compliance with Law. CARRIER, at its sole cost and expense, shall
            procure and maintain all licenses and/or permits and pay any taxes
            required by local, state or federal authorities with respect to the
            transportation services performed under this Agreement and at all
            times shall act in full compliance with all federal, state and local
            laws, rules and regulations controlling the performance of such
            services.

      2.8   Reporting Requirements. Toyota shall record the date and time that
            Vehicles are tendered to CARRIER and CARRIER shall report, through
            TMS/USA's computer system, the date and time of delivery at
            Destination, as well as any exception noted at the time of delivery.
            Such reporting by CARRIER shall be within two (2) days from the time
            delivery receipts are received by CARRIER's transmission location.

      2.9   Service Standards. CARRIER agrees to accept, transport and deliver
            all Vehicles tendered in accordance with the most recent version of
            the Toyota Assured Delivery Standards.

      2.10  Financial Reporting. CARRIER agrees to submit to TMS/USA the
            following documents and information every quarter and annually on a
            cumulative basis:

            a.    a copy of CARRIER's M-1 Financial Report filed with the
                  Interstate Commerce Commission.

            b.    summary of total operations and TMS/USA operations, including
                  quantity and year-to-date shipping volumes in units and
                  revenues.

            c.    a statement of total operating miles, and total loaded miles.

      2.11  Other Reports. CARRIER shall provide TMS/USA with a monthly load
            factor report for each Origin Point, setting forth such information
            as Toyota may request in a format approved by TMS/USA.

<PAGE>

                                                                   Exhibit 10.20

3.0   RATES AND CHARGES

      3.1   Contract Rates. As full and complete compensation for the services
            to be provided hereunder, TMS/USA shall pay CARRIER the Contract
            Rates set forth in Appendix A attached hereto and incorporated
            herein.

      3.2   Payment Procedures. Except for non-standard shipments, TMS/USA shall
            generate payment directly to CARRIER through the Toyota Traffic and
            Accounting System within ten (10) days of the time Vehicles are
            tendered to CARRIER for shipment. TMS/USA shall provide a statement
            of all Vehicles shipped via CARRIER covered by each payment. CARRIER
            shall submit an invoice to TMS/USA for any shipment by CARRIER not
            covered by payments generated through the Traffic and Accounting
            System.

      3.3   Deviation Numbers. CARRIER shall not transport, nor shall TMS/USA
            provide payment for, non-standard shipments without a pre-approved
            Deviation Number. Only the TMS/USA Traffic and Accounting department
            can provide a Deviation Number.

4.0   INSPECTION AND DELIVERY PROCEDURES

      4.1   Inspection. CARRIER shall have responsibility for inspection of
            Vehicles at the time of tender and shall note all damage and
            exceptions on a Toyota Inspection Delivery Receipt which shall be
            acknowledged in writing by a designated Toyota representative before
            Vehicles are dispatched from the point of tender.

      4.2   Documents. Each shipment shall be evidenced by a receipt in the form
            specified by TMS/USA, signed by both the CARRIER and the consignee
            or consignees designated by TMS/USA; showing the kind and quantity
            of Vehicles that CARRIER received and delivered at each loading and
            unloading point. Absence or loss of such receipt form shall not
            relieve CARRIER from responsibility for any Vehicles received by it.

5.0   LIABILITY AND CLAIMS

      5.1   Liability. CARRIER shall fully compensate the consignee through
            TMS/USA for any actual loss of or damage to Vehicles which (a)
            occurs while such Vehicles are in the possession of or under the
            control of CARRIER or which (b) arises from CARRIER's performance of
            or failure to perform properly its obligations pursuant to this
            Agreement; provided, however, that CARRIER shall not be liable for
            damage or loss which results from any of the exceptions noted and
            acknowledged on a Toyota Inspection Delivery Receipt, or for damage
            resulting from fluids leaking from Vehicles. Damages shall be
            calculated in accordance with the most recent version of the Toyota
            Vehicle Damage Classification Guide. CARRIER's obligations with
            respect to this Subsection 5.1 shall survive termination or
            expiration of this Agreement.

      5.2   Claims Paid Through Monthly Statement. Any claim for transportation
            or equipment damage to a Vehicle which is equal to Three Hundred
            Dollars

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                                                                   Exhibit 10.20

            ($300.00) or less shall be paid and processed by TMS/USA on a
            monthly statement. Once each month TMS/USA shall submit a summary
            statement to CARRIER setting forth each damage claim processed and
            paid by TMS/USA, together with the documentation substantiating each
            claim. CARRIER shall retain the right to audit and deny liability,
            in whole or in part, for any claim processed; provided that CARRIER
            submits a written statement setting forth in detail the basis for
            its denial within thirty (30) days of the date of receipt of the
            monthly summary identifying such claim. The parties agree to
            cooperate in resolving any disputed claims within thirty (30) days
            of notice of denial from CARRIER.

      5.3   Claims Other Than Those Paid Through the Monthly Statement. Except
            as provided in Subsection 5.2 and Toyota Vehicle Damage
            Classification Guide, a claim or intent to file a claim for loss,
            damage or injury to Vehicle shall be submitted in writing by TMS/USA
            to CARRIER within nine (9) months after delivery to a consignee as
            evidenced by a delivery receipt, independent survey report, or by a
            CARRIER Acknowledgement of Damage Letter. All claims will be
            processed by CARRIER and full payment or notice of denial will be
            made to TOYOTA within thirty (30) days after receipt by CARRIER. The
            parties agree to cooperate in resolving any disputed claims within
            thirty (30) days of notice of denial from CARRIER.

      5.4   Damage Control Policy. CARRIER shall create and/or maintain during
            the term of this Agreement, a documented Damage Control Policy
            satisfactory to TMS/USA. CARRIER shall meet with TMS/USA annually to
            discuss and formulate damage prevention strategy.

6.0   INSURANCE AND INDEMNITY

      6.1   Indemnity. CARRIER will defend, indemnify and save TMS/USA harmless
            from all liability, losses, claims, causes of action and expenses,
            including actual attorneys' fees and costs, based upon or arising
            out of injury to, or death of persons, or damage to or loss of
            property, caused by the acts or omissions of CARRIER, its employees
            or agents, arising out of or in connection with CARRIER's
            performance of its obligations pursuant to this Agreement, except to
            the extent that such loss or damage results from the intentional or
            negligent acts or omissions of TMS/USA. CARRIER's obligations with
            respect to this Subsection 6.1 shall survive termination or
            expiration of this Agreement.

      6.2   Insurance. At all times during the term of this Agreement, CARRIER
            shall maintain general comprehensive and automobile liability
            insurance with an insurance company acceptable to TMS/USA covering
            the indemnity set forth in Subsection 6.1 in the amount of TWO
            MILLION DOLLARS ($2,000,000) combined single limits. CARRIER will
            provide TMS/USA a certificate evidencing such insurance naming
            TMS/USA as Additional Named Insured and providing that TMS/USA shall
            receive thirty (30) days written notice prior to any cancellation or
            expiration of such insurance.

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                                                                   Exhibit 10.20

7.0   ACCOUNT RECONCILIATION

      7.1   Shipment Transmission Monitoring. TMS/USA shall fax to CARRIER on a
            daily basis, the "Truckaway Processing Exception Report" prepared by
            TMS/USA. CARRIER shall provide explanations for items appearing on
            said report, and fax the corrected information to TMS/USA within
            twenty-four (24) hours for the following three (3) error types: 1)
            Group Number Invalid, 2) Ship-To Dealer Invalid, and 3) Fields
            Followed by "?" are in Error.

      7.2   Tendered/Not Shipped Report. TMS/USA shall transmit daily to
            CARRIER, record of all Vehicles tendered to CARRIER but not yet
            shipped by CARRIER, per the TMS/USA Traffic and Accounting System.
            CARRIER agrees to provide written explanation for any Vehicle
            appearing in "Tendered/Not Shipped" status for any period exceeding
            three (3) days.

      7.3   Bi-Weekly Reconciliation of Accounts Payable. TMS/USA shall transmit
            to CARRIER on a weekly basis record of all Vehicles paid by TMS/USA
            for the previous Payment Cycle. TMS/USA's Payment Cycle runs from
            each Tuesday at 5:00 PM Pacific Standard Time until the following
            Tuesday at 5:00 PM Pacific Standard Time. CARRIER shall match by
            Vehicle Identification Number and Payment Amount all Vehicles for
            which TMS/USA has provided payment, against all Vehicles for which
            CARRIER expects payment. CARRIER shall then match any exceptions
            against the Tendered/Not Shipped Report and the Truckaway Processing
            Exception Report. CARRIER shall present to TMS/USA any remaining
            exceptions within ten (10) days of Payment Cycle close for action.

      7.4   Forfeiture of Payment. CARRIER shall forfeit any and all claim to
            outstanding Accounts Receivable (Vehicles transported by CARRIER but
            not invoiced by CARRIER) ninety (90) days after date of tender
            unless CARRIER contracts TMS/USA in writing within the ninety (90)
            day period requesting payment.

8.0   INDEPENDENT CONTRACTOR

      8.1   CARRIER's Employees. CARRIER shall be deemed to be an independent
            contractor hereunder and shall not be considered or permitted to be
            an agent, servant, joint venturer or partner of TMS/USA. All persons
            furnished, used, retained or hired by or on behalf of CARRIER shall
            be considered to be solely the employees or agents of CARRIER, and
            CARRIER shall be responsible for payment of any and all
            unemployment, social security and other payroll taxes for such
            persons, including any related assessments or contributions required
            by law.

      8.2   Worker's Compensation Insurance. CARRIER shall maintain, through the
            performance of its obligations under this Agreement, a policy or
            policies of worker's compensation insurance with such limits as may
            be required by law.

      8.3   Indemnification. CARRIER agrees to defend, indemnify and hold
            harmless TMS/USA, its subsidiaries, officers, directors, employees,
            agents and servants from and against any and all causes of action,
            claims, demands and expenses, including actual legal fees and
            expenses, that may be made or asserted by or on
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                                                                   Exhibit 10.20

            behalf of any persons furnished, supplied or retained by CARRIER
            under the worker's compensation laws of any jurisdiction.

      8.4   No Agency. TMS/USA and CARRIER intend and agree that neither party
            has the right or duty to act as agent for the other and shall not
            make any representations, enter into any negotiations or agreements
            on behalf of the other, nor contact any of the other's vendors and
            suppliers without the prior written consent of the other.

9.0   FORCE MAJEURE

      Neither party hereto shall be deemed to be in default of any provision of
      this Agreement, for any failure in performance, resulting from acts or
      events beyond the reasonable control of such party. For purposes of this
      Agreement, such acts shall include, but not be limited to, acts of God,
      civil or military authority, civil disturbance, war, strikes, fires, other
      catastrophes, or other "force majeure" events beyond the parties'
      reasonable control; provided, however, that the parties shall make all
      reasonable efforts to continue to meet their obligations during the
      duration of the force majeure condition and; provided, further, that the
      party declaring force majeure shall notify the other party promptly when
      the force majeure condition begins, the nature of the force majeure
      condition and when such condition is terminated. The suspension of any
      obligations owing to force majeure shall neither cause the term of this
      Agreement to be extended nor affect any rights accrued under this
      Agreement prior to the force majeure condition.

10.0  GENERAL PROVISIONS

      10.1  Assignment. No party hereto may assign this Agreement, in whole or
            in part, or any rights granted herein, or delegate to another party
            any of the duties hereunder, without the prior written consent of
            the other party. Any attempt to assign or transfer or delegate
            without such consent shall be void. Provided the consent required
            herein has been granted, this Agreement shall be binding upon and
            inure to the benefit of the parties hereto, and their successors and
            assigns. Notwithstanding the foregoing, TMS/USA shall have the
            right, at any time, without CARRIER's consent, to assign its rights
            hereunder to an affiliated entity.

      10.2  Notices. Except as otherwise provided in this Agreement, any notices
            given by any party under this Agreement shall be in writing, and
            shall be effective upon delivery to the other party by hand, by U.S.
            Certified mail, return receipt requested, by wire or facsimile
            confirmed by wire or facsimile response acknowledging receipt,
            addressed as follows:

            To CARRIER:     Allied Systems, Ltd.
                            160 Clairmont Avenue
                            Suite 600
                            Decatur, GA  30030
                            Attn: Senior Vice President Sales
                            Facsimile No. (404) 370-4216

<PAGE>

                                                                   Exhibit 10.20

            To TMS/USA:     Toyota Motor Sales, U.S.A., Inc.
                            19001 South Western Avenue
                            Torrance, California  90509
                            Attn: Logistics Operations Manager]
                            Facsimile No. (213) 618-7805

            Any party may designate a different address or facsimile number by
            giving the other party notice thereof pursuant to the provisions
            herein.

      10.3  Agreement Contains all the Terms. This Agreement, together with
            Appendices A and B constitutes the whole agreement between TMS/USA
            and CARRIER. There are no promises, terms, conditions or obligations
            other than those contained herein, and this Agreement supersedes all
            previous communications, representations or agreements, either oral
            or written, between the parties. No modification, alteration or
            amendment hereof shall be effective unless the same is evidenced in
            writing making specific reference to this Agreement, signed by duly
            authorized representatives of both parties.

      10.4  Applicable Law. This Agreement shall be interpreted according to the
            laws of the State of California.

      10.5  Non-Waiver. No waiver of any breach of any provision of this
            Agreement shall constitute a waiver of prior, concurrent or
            subsequent breaches of the same of any other provisions hereof and
            no waiver by any party shall be effective unless made in writing and
            signed by an authorized representative of that party.

      10.6  Confidentiality. TMS/USA and CARRIER and their agents, employees and
            representatives agree to treat all information relating to this
            Agreement as confidential and further agree not to disclose any such
            information to any third party without the prior written consent of
            the other party.

      10.7  Severability. In the event that any provision of this Agreement
            shall be held illegal or otherwise unenforceable for any reason,
            such provision shall be severed and the entire Agreement shall not
            fail on account thereof and the balance of the Agreement shall
            continue in full force and effect.

      10.8  Headings. The Section and Subsection headings contained in this
            Agreement are for reference only and are not intended to define or
            limit the scope of this Agreement or any term thereof.

      10.9  Recitals. The matters set forth in the "Recitals" clauses on page
            one (1) hereof are incorporated herein and made a part of this
            Agreement.

<PAGE>

                                                                   Exhibit 10.20

      IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the day and year written above.

                                        TOYOTA MOTOR SALES, U.S.A.,, INC.

                                        By: ____________________________________

                                        Its: Group Vice President

                                        ALLIED SYSTEMS, LTD.

                                        By: ____________________________________
                                        Its: ___________________________________