It details the transfer of ownership and possession of a vehicle. The vehicle sales agreement is between a seller and buyer for the sale of a vehicle.It specifies the vehicle make, model, year, and other details. Nigerian Sales Agreement. How to fill out the Private Car Sale Contract Template? How to Write a Real Estate Purchase Agreement. Discover the seamless way to set formula directly within your Car Purchase Agreement Template, all from the comfort of your browser. When buying a vehicle or equipment for your business, use this Vehicle and Equipment Purchase Agreement to protect yourself from unwarranted liabilities.