Find out what documents you will need to provide proof of sale and ownership if you are buying, selling, or gifting a vehicle. Description of the Vehicle.Watch this before you finance your next car (former dealer explains how to read a purchase contract) Simply go to where you bought the car. That is unless you bought it off an individual then your title becomes your proof of sales or what your bank provides. This Contract for the Purchase of Vehicle ("Contract"), made this ___ day of ______, 2023 (the "Effective. 1 If you're financing your purchase ; 3 The actual vehicle purchase agreement ; 4 Buyer's trade in certification ; 5 Warranty disclaimer and documentary fee notice.