The first L.E.T. (life enhancement transport), the Go-Kid Quadcoaster is a Four Wheel Fitness Flyer. Invented by Allen Humphrey, it is a safe, stable, exhilarating Push Coasting Vehicle. It's readily accepted in school PE, including special needs and vision impaired. With a Go-Kid, the rider stands on the rear-riding platform and pushes to the rear with either foot. The resulting exercise builds large muscle strength, trunk strength, static strength, cardiovascular strength and pulmonary strength, as well as hand-eye coordination. With caliper brakes, optional lights and other optional bells and whistles, this is a riding toy like no other.

The 37”-long Quadcoaster, a four-wheeled push scooter, accommodates up to 300 pounds. Kids ride it by alternating legs to push from the rear. It has a wide stance and a wide upright handle on a stable platform for controllable steering and balance. It provides physical benefits, helping children improve their motor-planning skills, strengthen their muscles and weight-shifting abilities, and hone their visual motor skills. The Quadcoaster also features locking-break levers. Launch date: 2008.