To register a vehicle you have bought privately in manitoba, you’ll need the following: Are you selling an old car, motorcycle, or any other vehicle? Bills of sale are used in the sale of moveable and tangible personal property. A bill of sale shows that a transaction took place on a specific date, proving that both parties wanted a transfer of ownership. When a vehicle owned by an estate is sold to a third party, a bill of sale (signed by the estate executor or disposer) is required, in addition to the other documents listed here.