Justin Hoyer broke his arm attempting this double back flip on a snowmobile at the 2012 Winter X Games in Aspen.
https://www.youtube.com/watch?v=u2VUktcPqNU
Justin Hoyer Crashes Attempting a Double Backflip on a Snowmobile
Justin Hoyer broke his arm attempting this double back flip on a snowmobile at the 2012 Winter X Games in Aspen.