http://www.vehiclehistory.gov/
My final related post in a group of used auto purchasing posts – the National Motor Vehicle Title Information System provides you some good baseline information about the title history of a car, at a lower pricepoint (granted with less information than) Carfax or the other auto info site I can’t think of offhand. You don’t get names, but you do get the sales history and odometer readings, as well as information on the title such as whether it is salvage, total loss, flood, etc. NMVTIS has the details of what is included in the report, and you have the option to select from several different vendors starting as low as $2 (I was pleased with my report from http://www.mvscusa.com at this price point).