Gather Necessary Documents: Collect the vehicle title, bill of sale, lien release (if applicable), buyer's valid ID, and proof of insurance. Bill of Sale: Prepare a bill of sale that includes vehicle details, sale price, and signatures from both parties.Create a record of your vehicle transactions in Texas. Our vehicle bill of sale template is easy to use and fully customizable. This transaction is made in the County of. ,. The Texas bill of sale form verifies the elemental facts of the sale of personal property in exchange for a predetermined compensatory amount.