The U.S. Air Force 846th Test Squadrons rocket propelled magnetically levitated sled system, or MagLev, broke a world record after reaching 633 mph on a .
With the flick of a spark the 846th Test Squadrons magnetically levitated sled system, or MagLev, broke a world record. Followed by a plume of smoke, the .
5 World Speed Records. These are 5 of the coolest speed records ever. These things are FAST! The fastest car, the fastest animal and some other speed .
World land speed record, 6453 mph rocket sled, Holloman High Speed Test Track.
