Chevy, Pontiac, Buick, Oldsmobile, Ford, Mercury, Plymouth, Dodge, AMC...there were some GREAT muscle cars!
Muscle car is a term used to refer to a variety of high performance automobiles. The term principally refers to American, Australian and to a lesser extent South African models. It generally describes a 2-door rear wheel drive mid-size car with a large, powerful V8 engine, and at an affordable price. Although opinions vary, it is generally accepted that classic muscle cars were produced in the late 1960s and early 1970s. Muscle cars were built for street use and in some cases racing. ( Edited by plmiller )  

http://en.wikipedia.org/wiki/Muscle_car