Instructions. The new owner's social security number, taxpayer identification number (TIN), or federal employer identification number (EIN) is required. Vehicle forms: Application for Texas Title (130-U), Application for Motor Vehicle Title, Service and Runner License.Signature of Seller. Travis county texas vehicle bill of sale pdf. 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.