On the eve of the 100th Tour de France, disgraced cyclist Lance Armstrong suggested that the race was so tough you had to cheat to win it. In an interview with French newspaper Le Monde, Armstrong said he never would have won his record seven-straight Tour titles without doping — and suggested that no one else could win without doing the same. "The Tour de France? No. Impossible to win without doping because the Tour is an endurance event where oxygen is decisive," he said.