This excerpt taken from the ATVI 10-K filed Jun 14, 2007.
Loss on sale of auto
The Company will reimburse you for the loss on sale of one auto for you and one for your spouse (if applicable). The reimbursement will be equal to the difference between the average wholesale value and the actual sales price of the vehicle(s), not to exceed the difference between the average retail and wholesale/trade-in value(s) of the automobile(s). Such reimbursement will be paid upon the submission of all appropriate documentation. The Company will pay any income tax due on this payment.