A Bill of Sale releases interest in a vehicle. A Certificate of Title or other ownership documents must accompany this form. INSTRUCTIONS.An RV Bill of Sale is a legal document that serves as proof of the sale and transfer of ownership of a recreational vehicle (RV) from a seller to a buyer. Bill Of Sale (VP 104) Releases a private party's ownership interest in a vehicle. Provide a proper title to the buyer. Vehicle Bill of Sale (Form VP-104) – This would be used to prove the legal sale and purchase of a motor vehicle in Nevada. Use online Nevada bills of sale to document the transfer of ownership of a car, boat, firearm, or other personal property from a seller to a buyer. What Paperwork Is Required To Register a Trailer in Nevada? A Nevada motor vehicle bill of sale is a legal document that is required in the State of Nevada as proof of the sale and purchase of a motor vehicle.