This first video is a buddy of mine last sunday, the second is of the World Champs? of drift triking? New sport to me, but it looks sooo fun!
40-60 mph, 6" off the ground, no brakes, or just a front brake, and drifting corners @ extremely high speeds!
http://www.youtube.com/watch?v=jxwaR_vuoew
http://www.youtube.com/watch?v=j56_YZvFsFs&feature=related
Looks so fun!