rallyDave Mirra won an unprecedented 14 gold medals as a BMX competitor at X Games before retiring from competition in 2011. Then he did something nobody in his sport could have predicted: He set his BMX bike aside altogether and never looked back, focusing instead on his new rallycross racing career, his wife and kids and new pursuits like amateur boxing and Ironman triathlons. XGames.com caught up with him just before this week's finale to the 2013 Global RallyCross series in Las Vegas for the scoop on leaving BMX behind, parting ways with Subaru -- his longtime rally sponsor -- and what's ahead for one of the fiercest competitors and biggest personalities in action sports.