Clearly print or type all information, except signatures. Two things are needed for most successful vehicle sales or transfers: proof of sale and proof of ownership.Basic information includes your name and address as well as the seller's name and address. The contract will also list the vehicle identification number or VIN. Get up and running quickly with a master service agreement template New York. This downloadable template will get you selling in no time. A master purchase agreement is a legally binding contract between buyer and seller, and typically relates to buying and selling goods rather than services. General Applicability. A purchase and sale agreement is used to document the parties' intentions and the terms they have agreed will govern the transaction. A vehicle sales agreement is a lawful arrangement summarizing the terms and conditions of a vehicle sale between a customer and a seller.