Guy attempts, with the help of slipstreaming, to break the British record for outright speed on a bicycle: an incredible 110mph. British Olympic track cyclist Laura Trott helps him get fit enough.
Motorbike racer and mechanic Guy Martin tries to set the world record for riding a motorcycle on the surface of water. Will Newton's Third Law of Motion enable him to skim across Bala Lake?
Guy is on a mission to do the seemingly impossible: fly using muscle power alone. He wants to build the world's fastest human powered aircraft - a plane without an engine that Guy will cycle.
Motorbike racer and mechanic Guy Martin sets out to break the record for the world's fastest gravity powered sled, plummeting down the new Pista Riberal speed ski slope in the Pyrenees.
