Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. Learn about bill of sale laws and requirements for the state of Texas.Get templates for buying and selling high-value items like cars, boats, and firearms. Learn about Florida Bill of Sale requirements. Get forms and templates to document the sale of items such as cars, boats, horses, firearms, and more. 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. A bill of sale benefits both the seller of a vehicle and the buyer. I Drive Safely will help you understand the importance of a Texas bill of sale. How do I fill this out?