Chances are you have probably driven a go-kart at some point. Maybe you or a neighbor had one when you were growing up, or perhaps at an amusement park or indoor track.  Either way, they are pretty fun and badass little machines that are fun to race around in.

In this video, these guys build the world's fastest shopping kart with a 125HP crotch rocket engine and two powered rear axles. This bad boy is definitely NOT street legal, but when has that ever stopped anyone?