He had very few actual race days pre-Tour (admittedly most were more intense than your average Tirreno-Adriatico stage) and he rode most of the 2nd half of the Tour at Del Toro's pace rather than his own, so he may well feel he's got a little more in the tank than in previous years.
Also, he's not on any "The Vuelta doesn't go past my house" thread, because it starts at his gaff in Monaco, which pretty much maximises his recuperation between the Tour and Vuelta. A TT, followed by a lumpy one then a hockey stick with a little Cat 3 tagged on the end, then a mountain stage In Andorra - he could have it wrapped up in four stages and use two and a half weeks for training.
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