After this admission by 1996 Tour de France winner Bjarne Riis, I think the Tour should move to an all-drugs format -- EPO, HGH, fake testosterone -- whatever you like. Go ahead and give yourself a pair of legs that would be more appropriate for an NFL offensive lineman than a championship cyclist. While they're at it, they can attach rockets to the bikes too. Now that's a bike race I'd watch!
Seriously, I'm not sure how the Tour can continue to operate with any shred of credibility. No matter who wins it this year, the overwhelming presumption will be that the cyclist was on something. Unless it's a Frenchman; I bet the labs will trip over themselves to cover up any positive test results by French cyclists.