Guy is happiest when tinkering with some crazy machine in his garage - starting with the Volvo estate he's turning into a racer for Sweden's super-competitive rallycross.
Guy creates a massively souped-up speedy version of a Piaggio Ape, the tiny Italian three-wheeler, and heads to southern Europe for a race. Can he beat Italian racers at their own game?
Guy Martin turns a Land Rover Defender into a super-fast off-road racer capable of 100mph. He goes to Wales to race against the best, but torrential rain makes survival the main goal.
Guy Martin bids to transform an ancient East German Trabant into a race car, for a low-speed showdown at Brands Hatch. Can he make this famously awful Cold War slowcoach into a winner?