I certainly hope there won't be a cars land. We already have Test Track, there's no need to have a clone in another park with a different look. I'd much rather see newer rides and other Pixar movies being added. I don't see the reason to import the same attraction from
Disneyland since we already have Test Track. So I'm hoping they utilize the space for something better.
I don't consider Cars Land to be a "clone" of Test Track.
First, of the multiple wonders of Cars Land...
only the Radiator Springs Racers is a single attraction that uses
similar drive vehicles to Test Track.
The kind of drive vehicle is where the similarity stops.
RSR is an astonishingly well-designed attraction, only if you were to look at
the wonderful multi-scene build-up to the actual race.
There is a great story to the attraction.
(OTOH, Test Track completely lacks in story since the conversion to the Tron-like
sets.)
RSR outdoor sections are breathtakingly huge and wondrous to behold.
This goes both before the dark-ride sections are entered and later, during the racing scenes.
The current Test Track is a pale "half-cousin, twice-removed" to the fully fleshed out, thoughtful, humorous...
and downright amazing... RSR of Cars Land.
Then, there is all the rest of the theming, attractions, and food of Cars Land...
But, that's another post.