I went in March 2011 and can confirm that all the usual cars jumping, split cars etc were there as expected. However, I'm 100% sure there was no Herbie. That would explain why there was a section in the middle where it felt like the presenters were padding for a good few minutes.
I was pretty psyched when I heard Lightning McQueen would be in the new version of the show, as our whole family loved the show and was looking forward to watching it next time we go, and we all dearly love the first cars film.
However, after seeing a video online (youtube I'm pretty sure, an official Disney promo one for investors by the look of it) It looks like the Lightning McQueen in the show does barely nothing, just drives round for a bit - no jumping, ramps, driving backwards, on 2 wheels, nothing. And the eyes and mouth on the model are completely static. Oh well, I'm sure the kids will like it if just for the novelty.