Super Mario Kart is the first in a popular series of games starring the Mario cast racing go-karts. This run aims to get record times in all tracks at 150cc difficulty. This is achieved mostly by jumping straight into walls, bottomless pits, and lava, among many other things. Mushrooms are also used frequently due to their mysteriously friction-free propulsion powers. A high amount of wall-bouncing is required.
(Yes I copied that from the publication on TASVideos)