VEHICLE BILL OF SALE dmv.ny.gov. SELLER. Vehicle or Hull Identification Number.In a private sale, have the seller make out a bill of sale in addition to the ownership and sales tax documents. Next Section. Continue. Edit, sign, and share bill of sale for car with lien online. No need to install software, just go to DocHub, and sign up instantly and for free. A motor vehicle bill of sale is between a buyer and a seller of a car, truck, or motorcycle. It is signed as the last step in the sales process. If the vehicle is purchased from a New York State dealer, provide form MV-50 (Retail Certificate of Sale). Blank homestead forms and instructions for completing and recording them are available on the registry website.