July 28, 2004

Mr. Lloyd I. Miller, III
4550 Gordon Drive
Naples, FL 34102-7914

Dear Mr. Miller:

     In furtherance of the business and strategic objectives of Remote Dynamics
(the “Company” or “Buyer”), the Company has offered to purchase, and you and
certain affiliated entities named on the signature pages of this letter
agreement (“Sellers”) have agreed to sell, an aggregate of 929,948 shares (the
“Shares”) of common stock of the Company, par value $0.01 per share (the “Common
Stock”). You and the other Sellers received such shares (the “Shares”) in
exchange for previously existing debt of the Company that was previously issued
under the Company’s indenture for the 13.75% Notes due September 15, 2005. The
Shares were acquired by the Sellers under the Third Amended Plan of
Reorganization (the “Plan”) of Minorplanet Systems USA, Inc., Caren (292)
Limited, and Minorplanet Systems USA Limited, confirmed by the U.S. Bankruptcy
Court for the Northern District of Texas-Dallas Division, effective July 2,
2004. In connection with the Plan, each share of Common Stock was stipulated to
be valued at $3.62.

     In connection with the purchase and sale of the Shares under this letter
agreement (the “Sale”), and for good and valuable consideration, the Company and
Sellers agree as follows:

•   Each of the Sellers hereby sells, assigns, transfers, conveys and delivers
to Buyer, and Buyer hereby purchases and accepts the assignment, transfer,
conveyance and delivery from Seller of, all right, title and interest of such
Seller in and to the number of Shares set forth for such Seller on the signature
pages hereof, and Buyer hereby agrees to pay to Seller a purchase price of $2.00
per share by wire transfer in immediately available funds, or an aggregate
purchase price set forth for each Seller on the signature page hereof. The wire
instructions have been provided for each Seller in writing to the Buyer.   •  
Each of the Sellers represents and warrants that such Seller owns the number of
Shares set forth for such Seller on the signature pages hereof, free and clear
of all security interests, liens, claims, charges, options or other encumbrance
or restriction of any kind

 

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    (collectively, a “Lien”), other than Liens on securities held in margin
accounts to be terminated on or prior to the date hereof and any Liens that may
be created by Buyer.   •   The undersigned Lloyd I. Miller, III, represents and
warrants that he is authorized to sign this letter agreement on behalf of each
of the Sellers.   •   This letter agreement and the transactions set forth
herein have been authorized and approved by all required corporate actions of
the Company, including approval by a Special Committee of the Board of Directors
of the Company consisting of directors that have no interest in the Sale.   •  
The relationship between Sellers and Buyer shall be that of seller and buyer.
Neither the Sellers nor the Buyer is a trustee or agent for the other. As of the
effective time of this letter agreement, Mr. Miller has resigned as a director
of the Company, and neither the Sellers nor the Buyer have any fiduciary
obligations or duty to the other. This letter agreement shall not be construed
to create a partnership or joint venture between the parties.   •   Sellers and
Buyer have conducted an independent evaluation of the Company and the Sale, and
each party has had an opportunity to ask questions of the other party. Neither
Sellers nor Buyer shall have any responsibility or liability with respect to the
disclosure or nondisclosure of any information regarding the Company or the
Sale, provided that such information, if any, does not affect the truth or
accuracy of the representations or warranties contained in this letter
agreement.   •   Each Seller jointly and severally represents and warrants to
the Company that none of the Sellers is presently in possession of any material
non-public information that would prohibit them from disposing of their
respective Shares, and the Company represents and warrants to each of the
Sellers that the Company is not presently in possession of any material
nonpublic information that would prohibit the Company from acquiring the Shares,
under Section 10(b) of the Securities Exchange Act of 1934, as amended,
Rule 10b-5 promulgated thereunder and other related SEC rules and
interpretations.

 

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This letter agreement may be executed in any number of counterparts, by
facsimile or by original signature, and each such counterpart hereof shall be
deemed to be an original instrument. All such counterparts together shall
constitute one agreement.

     

  Very truly yours,
 
   

  /s/ Dennis R. Casey
 
   

  Dennis R. Casey

  President and Chief Executive Officer

  Remote Dynamics Incorporated

  1155 Kas Drive, Suite 100

  Richardson, TX 75081

Agreed to:

/s/ Lloyd I. Miller, II
Lloyd I. Miller, III

Dated as of July 28, 2004

 

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Agreed to:

TRUST A-3

     
By:
  /s/ Lloyd I. Miller, III

 

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Name: Lloyd I. Miller, III

  Title: Investment Advisor

  Number of Shares: 15,682

  Proceeds: $31,364

TRUST A-4

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Title: Investment Advisor

  Number of Shares: 324,620

  Proceeds: $649,240

LLOYD CRIDER – IRREVOCABLE
TRUST AGREEMENT

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Title: Trustee

  Number of Shares: 17,250

  Proceeds: $34,500

CATHERINE C. MILLER – IRREVOCABLE
TRUST AGREEMENT

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Title: Trustee

  Number of Shares: 15,682

  Proceeds: $31,364

 

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KIMBERLY MILLER – IRREVOCABLE
TRUST AGREEMENT

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Title: Trustee

  Number of Shares: 15,682

  Proceeds: $31,364

LLOYD I. MILLER, III – IRREVOCABLE
TRUST AGREEMENT

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Title: Trustee

  Number of Shares: 76,842

  Proceeds: $153,684

MILFAM I L.P.

     
By:
  Milfam LLC,

  as General Partner

     
By:
  /s/ Lloyd I. Miller, III

 

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Name: Lloyd I. Miller, III

  Title: Manager

  Number of Shares: 109,775

  Proceeds: $219,550

MILFAM II L.P.

     
By:
  Milfam LLC,

  as General Partner

     
By:
  /s/ Lloyd I. Miller, III

 

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Name: Lloyd I. Miller, III
Title: Manager

  Number of Shares: 136,434

  Proceeds: $272,868

 

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LLOYD I. MILLER, III

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Number of Shares: 186,617

  Proceeds: $373,234

LLOYD I. MILLER, III

     
By:
  /s/ Lloyd I. Miller, III

 

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  Name: Lloyd I. Miller, III

  Number of Shares: 31,364

  Proceeds: $62,728