. . . the Autopia looks pretty lame now that there is a Carsland. The Autopia ride experience has eroded, from real Go Karting in 1955, to fun bumper cars, to "crash less" toy cars you can barely steer and crawl along.
Disneyland needs more common area too to absorb guests, so Tomorrowland is kind a big area with lots of acreage that is eaten up by the Autopia and the motor boats. I cannot imagine Subs going out this soon given the mega investment and popularity as some suggest, but I've been wrong before.
I seriously doubt they'll ever take the Autopia out. Here's my reasoning:
1. Autopia was an opening day attraction, there's nostalgia (even though it isn't the same).
2. Autopia has FastPass. When was the last time Disney took out an attraction with fast pass?
3. The under-ten-years-old age group loves Autopia, as well as a lot of teens who don't have learner permits yet. Older fan boys aren't wowed by it anymore, but its more about parents having fun with their kids.
4. Hong Kong Disneyland has an electric Autopia, as well as futuristic theming. Autopia was a cheap ride to build and run—though if Disneyland added something to look at besides the monorail track/people mover track, like an awesome futuristic landscape, and made it electric, the Autopia would remain popular, and become even more popular. Filling the Autopia queue with guests is a lot of crowd space.
5. Autopia is built over the Subs building. To fully utilize the area (for something other than a place to soak up the crowds), they'll have to tear out the subs which remain popular. Or pay tens of millions to somehow build a massive show-building/queue over the subs building. Yes, the sub are slow loading, but guests will wait 30-45 minutes and guests waiting in switchbacks soaks up crowds like nothing else.
6. Yeah, its on a rail, but you still have to steer it and push on the gas pedal, more interactive than Radiator Springs Racers which the guests are passive.
7. Rip out Autopia and families with young kids will go elsewhere for these rides, like Lego-land. Its a right of passage thing, and families with young kids still love it.
8. Paul Pressler wanted to take out the subs because he wanted more storage space.
9. It is harder to hide a showbuilding in Tomorrowland than Frontierland, due to the trees planted around Frontierland and the ease of planting trees to hide a large showbuilding.