ok then, is a torana SLR a pony car? what about a falcon sprint? an Aspen R/T? a Firenza Can-Am? Are the modern camaro, mustang, and challenger pony cars, or not? If not, when exactly did each of them transform from "pony" to "muscle" cars? but if they still are pony cars, how is a charger considered a muscle car, when compared to a challenger the only difference is about 90mm more in the wheelbase? Or, get this: they're stupid, fuzzy, ambiguous marketing terms, probably devised for one specific generation of one specific model, and trying to come up with a fine line for what is and what isn't in that category will always devolve into mindless arguments about completely arbitrarily written dictionary definitions.