American vehicles are confirmed to appear in Project CARS. Ford is currently the only American car maufacterer that is confirmed to appear in Project CARS. However, ficitional Vehicles such as the Formula A,B, and C are based off of American vehicles.
Despite Ford being an American Manufacterer, not all of the cars from Ford are American, many are which originated from Europe. Such examples include the Ford Escort, Ford GT40 MK II and Ford Focus RS, are among some examples.
Some actual American Made Cars include the 1966 Ford Mustang 2+2, 1997 Ford Mustang Cobra Trans Am, the 2013 Ford Mustang Boss 302R, and the 2015 Ford Mustang GT.