I just saw this quote from Contador made after the time trial and before the first stage in the Pyrenees:

As of now, he’ll gauge his efforts against the performances of Cadel Evans and Andreas Klöden. “They’re the most imposing of the favorites, although now others will attack from the far flanks, like Astana and others. But for me, those two are the wheels to monitor. Rasmussen is very strong, too, but I think if I gain a little on him, it’s possible to take him in the last time trial.”

He sounds pretty confident of his chances to me. This could be a great last few days!