I understand that. You are right it would make no sense for GM to sponsor a re-branded attraction.
Not to mention the fact that one Pixar franchise in Future world is one too many. Wouldn't you agree?
Though, it looks like Carsland is far and away better than Nemoville.
Besides, if they were going to convert it to Cars they may as well tear down the Odyssey and make the entire land. But, as you say, it certainly wouldn't fit the theme.
I like the idea of it being only at DCA. Those kind of unique attractions are what make each park special. They could use more Pixar but maybe another movie.
I actually agree with that to a certain extent. But, I'm certainly glad we got Soarin', for instance.
I think the biggest problem with Carsland is that its premier attraction is based on the same technology that we already have in Test Track.
To me, Soarin' needs more than just 'over California'. While this makes sense for people where the only thing they see in California is DLR, I feel it should be different for WDW. I remember some old rumors about a 'Soarin' over the world' update but nothing so far.