The spokes on the racer's wheel shattered, causing the car to wreck and dispatching the wheel high into the air. Following its liberation from the hub, the tire found its way into the stands where, thankfully, none of the spectators were injured by its landing. The Monza's driver, Ken Epsman, walked away from the crash.
Thanks to some very lucky timing, we managed to uncover video of the entire scary incident. Take a look.