An Alabama motor vehicle bill of sale outlines the terms of a vehicle sale between a buyer and seller. Bill of sale, invoice or other sales document – minimum requirements.Clearly print or type all information, except signatures. The form must have the vehicle details, purchase price, and the seller's signature. The seller must authorize the form before a notary public. An Alabama bill of sale records a transaction between a seller and buyer of goods. It includes the buyer and seller's name, property details, purchase or trade. 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. Title Procedure – Transfer Of Title For Vehicle Under The Abandoned Motor Vehicle Act – Bill of Sale (Form MVT 32-13B).