The world's first 1,000 mph car, the Bloodhound SSC, just became bullet-proof. This car isn't going to hit the highway in a hail of gunfire, obviously. It plans to break the World Land Speed Record in 2016. At 1000 mph, the wheels will be doing 10,000 rpm, which is 167 revolutions per second. Going that fast, any tiny rock kicked up from the car could become a lethal projectile, derailing the entire run and killing its driver, Andy Green. The Bloodhound's design team is most concerned that a chunks of metal could get dislodged from the wheels themselves and then fly towards the cockpit at incredible speeds.