As I adjusted the 20-pound bulletproof vest, I was grateful for the cooler spring weather. On a normal bike ride I would be trying to shed as much weight as possible. But this was not a normal ride.

Get ready for the wildest two-wheel ride on the App Store! Xtreme Wheels takes you on an amazing, hazard filled trip over explosives, ladders, barrels, twisted ramps, huge gaps, and precarious cargo ...