Donation receipts for donated vehicles work in two ways. 1) If you sell the vehicle, you need to mention the date of sale and the total profits that you made in the donation receipt. 2) if you end up using it, you need to mention why you’re doing so and how long you would in the donation receipt. In the first case, your donors cannot claim more deductions than the selling price. It is a good practice to mention that in the donation receipt.