When I talked to Tanner Foust a few days before he attempted to break Johnny Greaves's 2009 four-wheel jump record of 301 feet, there was one question I had to ask: Really? The three-time X Games gold medalist, Hollywood stunt driver (Fast and Furious: Tokyo Drift, Dukes of Hazzard, Bourne Ultimatum) and host of the History channel's Top Gear USA laughed. "Yeah. Why are we doing this? It looks daunting on paper, but when you break down the science – certain miles per hour over this distance, ramp like this – you just make sure you hit that mark and let physics do its job. For a jump like this, it's all just science."