I was into cars and modifying them but never something as ridicules as cars that jump up and down. Should be illegal and probably is. Would one make their computer jump up and down? This is Ghetto entertainment.
Lowrider enthusiasts and owners don't always live in the ghetto, my friend. I'm pretty sure that guys who do other modifications have something illegal in their cars, or do illegal shit in their cars that in many cases leave them wrapped around a tree. The shit guys with souped up cars do may be viewed as ridiculous and ghetto.