It has to do with trucks, actually. And the terrain you drive them in, too, but it's not racing, it's just going out and beating the heck out of your truck on the roughest terrain you can possibly navigate in it. Also check out mud-bogging, which is good times, too.
Muscle cars have power and attitude, as well as speed. Granted, they can't hit the speeds those little rice rockets can, but it's made up for by the fact that you'll survive if you hit a butterfly at top speed, which I can't guarantee you in a street racer. :wink: Muscle cars were actually the original street racers, my Dad drove a 1967 Plymouth 426 Hemi GTX back in the day, and that was one slick car.