Muscle car is a term used to refer to a variety of high performance automobiles.At its most widely accepted the term refers to American 2-door rear wheel drive mid-size cars of the late 1960s and early 1970s equipped with large, powerful V8s and sold at an affordable price for street use and drag racing, formally and informally.As such, they are distinct from two-seat sports cars and expensive 2+2 GTs intended for high-speed touring and road racing.Building on the American phenomenon and developing simultaneously in their own markets, muscle cars also emerged in their own fashions in Australia, South Africa, the UK and elsewhere.