Set to debut in summer 2016, the first-of-its-kind Sky Caliber vertical looping water slide at Action Park in Vernon, N.J., will rocket riders 50 mph through a 30-foot-tall loop at 6 Gs while ...

"I realised that being in a vehicle inside the slide lets you do a vertical drop safely." After a year of virtual 3D simulations, 50 raft designs -- including a terrifying head-first option ...