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"For every kid who has ever played with Hot Wheels, this video is like a crazy dream come true.\nDrivers Tanner Foust and Greg Tracy conquered the 60-foot double loop over the weekend at the X Games in Los Angeles. As  this video explains, to achieve this feat without killing themselves, the drivers had to hit a speed between 48 mph and 52 mph and the cars were outfitted with extra-stiff suspension and the tires were inflated to 80 psi \u2014 60% more than normal.  \nAt that speed, the drivers hit a force of 7G's. Foust and Tracy prepared for the stunt by subjecting themselves to tests in military planes at that G-force level. However, when the drivers reached the top of the loop, they were actually experienced 0 G's \u2014in other words they were defying gravity. \nWhat do you think of this stunt? Insane? Impressive? Let us know in the comments."^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2012/07/02/hot-wheels-double-loop/>