Take That, Segway. Mario Kart Style Obstacle Speed Racing
Below is race driver Ken Block demonstrating the sport of gymkhana. He pulls some crazy tricks, but best of all is the 360 degree donut he does inside a building. The video starts to warm up around a minute in, and gets truly nuts around 3:00.
(Gymkhana is a similar to autocross, except the courses are very complex and must be memorized by the driver to achieve best time. Obstacles include cones, tires, and barrels; drivers are challenged to perform "reversals, 180 degree spins, 360 degree spins, parking boxes, figure 8s and other advanced skills."
And of course, drifting.)