Motorbike racer and lorry mechanic Guy Martin undertakes a series of speed-based record attempts, exploring the boundaries of physics and learning about the science of speed. This latest collection of Guy's continuing adventures sees him attempt some of his fastest and most dangerous challenges yet. Can he become the first man to do 400mph on a motorcycle? Can he beat the speed record for a human-powered boat? Can he cross the English Channel in a pedal-powered airship? Will he succeed in turning his written-off Transit van into a racing machine that can win at the fastest road race on the planet: the Nevada Open Road Challenge? And finally, in a special programme dedicated to the science of Formula 1, can Guy and his motorcycle beat racing legend David Coulthard in an F1 car?