But nothing compares to the ingenuity that the guys at Grind Hard Plumbing Co. used to build this ludicrous off-road electric shifter kart. Many of you may already know of the exploits of Grind ...

It all leads up to the ultimate in karting: the 125cc shifter kart. With a top speed of 120 miles per hour, the shifter is no toy. "When you do open it up, my god, it goes fast," said Patrick.