Homemade roller coaster

Tired of waiting in long lines for the coasters at his local amusement park, John decided to build one right in his own backyard. You might think that the result would be a wussy little ride that you'd get bored with after the second run, but John's Blue Flash gets pretty ambitious, including a complete 360 degree loop. There's even a motor drive that pulls you up the starting ramp that's built over the roof of his barn.