aSales include leased vehicles and fleet sales. bIncludes vehicles produced in Canada and Mexico.cCalendar year vehicle sales.
Notes: Data for 2009 are revised. The first domestic hybrid vehicle was not introduced in the U.S. market until 2004. A hybrid vehicle is a vehicle powered by a combination of battery-electric motor(s) and an internal combustion engine.
Source: Ward’s Automotive Group, WardsAuto.com, personal communication, accessed January 2012.