Even Felix Baumgartner wouldn't try this.
Brendan Fairclough strapped on a helmet cam before taking off on the most insane and dangerous downhill mountain bike race in the world and somehow managed to stay alive.
This makes the chase scene in Skyfall look like child's play. It's the Taxco Urban Downhill in Taxco, Mexico, and we advise you to not try this at home. You shouldn't even watch this video without a helmet.
(h/t The Guardian)