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.A Texas bill of sale acts as a legal record that documents the transfer of ownership from you to another party or vice versa. The form consists of the significant vehicle, buyer, seller, and sale data, along with affirming signatures from both parties. This transaction is made in the County of. ,. Where can I renew my vehicle registration? Bill of Sale: A bill of sale outlines the transaction details, including the sale price, date, and vehicle identification number (VIN).