During the seventies Hot Wheels were literally hot stuff because they used a long piece of track that could be looped and shaped so that the cars could travel at high speed without damaging anything. This led to some serious stunts and even longer tracks with power boosters placed along the track at certain points in order to keep the car going along the route!
However, it seems that these guys have grown up and so has their Hot Wheels track and cars. this set up was seen at the recent Indianapolis 500 race day, where the driver broke the world record for a four wheeled car jump, I was rather expecting the car to go through a loop or something more exciting, it is quite good though, maybe the loop will be for next year!
Source [Coolest Gadgets]