A Pennsylvania vehicle bill of sale is a legal document formalizing the sale and purchase of a motor vehicle between a buyer and seller. The Pennsylvania bill of sale form acknowledges the transfer of possession of a piece of personal property for an agreedupon sum of money.This transaction is made in the County of. ,. State of Pennsylvania, on. A Pennsylvania bill of sale documents the transfer of ownership of a motor vehicle, boat, gun, or other valuable asset. This form is only available from authorized agents of PennDOT. Create a free Pennsylvania bill of sale with detailed instructions for selling a car, boat, gun, or other property. Download a simple bill of sale form in Pennsylvania, to be customized as per your need. A Pennsylvania bill of sale form legally transfers possession of property from the seller to the buyer, confirming the transaction. This article will describe motor vehicle bills of sale utilized in the state of Pennsylvania and examine the registration of vehicles there.