Jeremy Clarkson, Richard Hammond and James May attempt to build a road-legal amphibious car with which they can smash a British water speed record. Elsewhere in this show, Jeremy looks back at two 1990s supercars, the Jaguar XJ220 and Bugatti EB 110 SS, and Celebrity Face Off finds the world’s fastest magician Dynamo goes head-to-head against Penn & Teller.