I saw the whole show, but i wasn't too impressed, because of the danger involved. Most of the cars had no safty equipment at all IE: roll cages. I saw some trailered cars, but in reality i don't think they are 8 sec. cars at a track, and like Bigray said put a real race car up against them and they would be skunked in most cases.
But it's just a TV show and it will probably go over pretty big due to the like of knowledge of most of the viewing public.
JMO
Zip.