Nigerian Sales Agreement. 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. A vehicle purchase agreement or vehicle contract is very important. Here are the templates that you can download and print. By signing this contract, I choose to purchase the motor vehicle on credit according to the terms of this contract. How to Write a Real Estate Purchase Agreement. When buying a vehicle or equipment for your business, use this Vehicle and Equipment Purchase Agreement to protect yourself from unwarranted liabilities. The buyer takes the full ownership of the Vehicle (Make, Registration Number). bearing. It contains information about the buyer and the seller, a description of the vehicle being sold, and information about the transaction, such as price.