Of course he is doped, what else?
Give me a break - he flies up to Verbier at warp speed. He wins the TT before FC, skinny and at 61 kg. The absolute best finally was yesterday at the Mt. Ventoux - he doesn't even sweat !!! All others are riding at the limit, sweaty, but Contador, even on the last couple of km's, with average grades of 8 - 11%, a stage of over 160 km and an actual Tour distance of approx. 3300 km in his legs, looks like some dude that just had a cappucino with some brioches 10 minutes ago, going for a charity ride.
The point is - we're actually used to see this superhuman stuff to such an extent, no matter if cycling, swimming, athletics or whatever, that we don't even notice it anymore.