The inside story of Guy Martin's fastest and most dangerous speed challenge to date: his recent attempt to become the fastest man on two wheels and break the motorcycle land speed record. The existing record is 376mph; to beat it Guy has to master a special one-off machine. The 1000-horsepower Triumph Rocket Streamliner, likened to a fighter jet without wings, uses two engines, has parachutes for brakes and is steered in a lying down position with two joysticks. The programme follows Guy through every step of the project, from his job interview in Portland, Oregon, to the 'fastest place on Earth': the iconic Bonneville Salt Flats in Nevada, where this daredevil has to learn how to ride all over again, using training wheel stabilisers.