Here, we look at automobile registrations as well as light truck registrations. These vehicles are used for both personal and commercial purposes but can be seen as primarily vehicles for personal use.

Geographic reference: United States
Year: 2008
Market size: Automobiles, 137.1 million and Light Trucks, 101.2 million
Source: “United States Fast Facts,” State Transportation Statistics 2009, page V.
Original source: Research and Innovation Technology Administration, Bureau of Transportation Statistics, U.S. Department of Transportation