Speaking on his Sporting Misadventures podcast, Sir Chris, 50, said: "Jeremy Clarkson did the auction at the Tour de 4 clay shoot that Christian Horner put on and we raised £1 million in an afternoon. At that point, Mr Clarkson turned to the guests who had flown in by helicopter and asked for £10,000 from each of them. Sir Chris revealed: "Jeremy said, ‘Right, there are people here who have arrived in helicopters. Sir Chris, a six-time Olympic gold medallist, founded the Tour de 4 cycle challenge after being diagnosed with stage four prostate cancer. Tour de 4 will return to Glasgow this September, starting and finishing at the Sir Chris Hoy Velodrome.