The current owner must provide proof of identity (see proofs of identity). In the state of New York, you generally cannot register a car with just a bill of sale and no title.The new owner must give the original bill of sale to the DMV along with the other required proofs of ownership when they title and register the vehicle. Fill out Form MV-902 (Application for Duplicate Certificate of Title). A New York motor vehicle bill of sale provides proof that a motor vehicle has been legally sold and acquired in the State of New York.