|For those without comedic tastes, the.|
Despite its misleading title, Rainbow Road (also known as Rainbow Crap) is actually made out of a rainbow that is cheese in disguise. It is the hardest course of the SMK TV show, since it has no walls and is in space. If someone falls off, a Cheez-it will put them back on the track. Humorously, near the end of the episode one of the drivers ate the Cheez-it that was helping it get back on track, and the person who ate it fell down and broke his Kart.