Find out what documents you will need to provide proof of sale and ownership if you are buying, selling, or gifting a vehicle. 41 votes, 36 comments.Hey guys, I just left a dealership really upset and angry. Yes, a purchase agreement is a valid and binding contract in NY IF the dodge dealership signed it. If they signed it, then they are held to its terms. Read about the "cooling off" period at the NYC Bar Legal Referral Service. Find an attorney in New York for help with used car contracts. Let's go over the Retail Installment Contract. The City of New York will auction vehicles that have been seized or abandoned. Unlike some of the other answers, I can provide some alternative options for you.