This excerpt taken from the HPQ 8-K filed Feb 22, 2005.
Transportation: The Company provided automobile must be returned upon termination. The use of the Corporate Aircraft will also cease upon termination.
Carly, the above details the essential terms of the agreement between you and HP concerning termination of employment. There will be no other payments to you other than those specified above.
Carly, please sign below to indicate your agreement with the terms and conditions set forth in this document.