I would have to think that the Indy Speedway would have to go. Make half of it a ride dedicated to the Cars movie, and the other half a futuristic Tomorrowland ride. I was thinking maybe something to do with Hyperspace travel, and inter-dimensional travel. It is something that is constantly being researched, so there is some truth to it being a possibility (maybe not a great possibility, but it is being looked into) And it is also something that would revolutionize space travel. Whatever fictional company could "solve" hyperspace travel, and could take us to the stars, only to interrupted by "unforseen" problems. Apparently Timekeeper is being replaced by a Monsters, Inc. attraction, and I doubt that they will dump Stitch, even though I haven't even ridden it yet because of so many bad reviews. And even if they do, I doubt it would be for another Exterrorestrial encounter-type ride.