To create that illusion, a linear induction motor system would speed coasters up the track with unprecedented precision. As the coaster approached a top speed of more than 100 mph, it would suddenly and ever so slightly decelerate—just enough to throw the passengers up from their seats, like stones from a catapult—and then quickly adjust its speed to fly in formation with and around the passengers. (The ride's calculations would correspond to the unique heft of any particular group.) As the coaster reached the top of the track and began to drop back down, the computer system would continue to match its speed to that of the falling passengers, extending the sensation of weightlessness for several additional seconds, and finally rapidly decelerate to a stop back at the base station.