The guys race each other using a bike, a boat and a car, to find the fastest way across London. The Stig drives the Caparo T1 in an attempt to beat the long-standing fastest time set by the Koenigsegg. Richard regains the will to live by racing an Aston Martin V8 Vantage Roadster against a man with rockets strapped to his back. Simon Cowell is the Star in a Reasonably Priced Car.