WOW!! These guys are NUTS!! It's moments like 1:30 and 2:37 that keep me from getting on one of those! I'll keep my racing to four wheels!!!!
http://www.angelfire.com/ak2/intelligencerreport/insane_race.html#.TsxzFluaC8I.facebook
http://www.angelfire.com/ak2/intelligencerreport/insane_race.html#.TsxzFluaC8I.facebook