How do you write a 'receipt'?

A receipt is just a dated, signed statement saying you have received a certain amount of money in exchange for whatever, in this case, a car.

234 Highlands Ave

Newtown, MI

To Whom it may Concern.

This is to confirm that I have received $500 (five hundred dollars) from Mr John Smith as full payment for a 1943 Buick convertible, registration AVA 1234.

signed

Wilbur Jones

(WILBUR JONES)

9 November 2008