KTM ‘s new GT version of its X-Bow roadster is a street-legal go-kart–the kind which Mario could only dream of racing. With a new windscreen, side windows and doors, the X-Bow GT is now an even more comfortable ride, while not losing anything in the speed department. An Audi-sourced 2.0-liter inline 4-cylinder gas engine kicks out 285 hp at 6,400 rpm and takes you from 0-62 in 4.1 seconds.The whole thing only weighs 1,867 lbs, so yes, the go-kart handling could not get any more go kartier here.