Rock n Roller Coaster My favorite of the rides at Walt Disney World is arguably the most thrill-inducing ride in the parks. The Rock n Roller Coaster is a dark ride from 0 to 57 mph in mere ...

This week we're testing our nerves on one of LA's scariest rollercoasters ... our heart rates while we ride one of the most terrifying rollercoasters we've ever seen. The lowest heart rate ...