The term was first used in the 1970s. It has different interpretations for different individuals and groups. Technically it is a car with a a high performance V8. Some examples are listed here: AMC AMX, Buick GS, Chevrolet Camaro SS and Z-28 models, Chevrolet Chevelle SS, Chevrolet Impala SS, Chevrolet Nova SS, Dodge Challenger RT, Dodge Charger RT, Dodge Coronet RT, Dodge Dart 383 and 440, Dodge daytona, Dodge Super Bee, Ford Fairlane and Torino GT and Cobra models. Muscle cars are truly hot in the collector car market.