This is a clip from X-Games 13 where Levi Lavallee attemps to land the world's first double backflip...on a snowmobile. In case you don't know, those things are rather heavy, and watching the video when you see him take about 10 seconds to execute the first flip and that's when you start to say "there's no way he's making that second flip."

But he does, and it's kind of a crash landing, but at least the snowmobile is still on its feet, so that counts for something. The announcers start bitching about it not being a "ride-away," but whatever, it's still awesome.