This form outlines vital information including the purchase price, vehicle details, and the buyer's and seller's signatures, ensuring that the transaction is. What is on a bill of sale for a car in massachusetts? Selling your car is faster when you've got a fine automobile bill of sale template to use. A bill of sale also verifies the sale and key vehicle data. Provides massachusetts bill of sale forms for all your bill of sale needs, including bill of sale forms for the sale of an auto, boat, motocycle, horse or other from of personal property.