Find out what documents you will need to provide proof of sale and ownership if you are buying, selling, or gifting a vehicle. A sample annotated bill of sale and assignment agreement.A bill of sale is a document of title and an assignment transfers title to another party. Use an asset purchase agreement when acquiring the assets of another company. Download our attorney-drafted template as a PDF or Word file. A vehicle purchase agreement or vehicle contract is very important. Here are the templates that you can download and print. An as-is bill of sale is a transaction in which a buyer is purchasing an item in its present condition with all faults, visible or not.