I'll admit my own bias here: I hate the Cars idea and I'm admittedly surprised it's not been immediately laughed off the thread. I just don't think it fits in theme with the surrounding areas, is a necessary addition to this specific park as an attraction, or would be a good use of one of the final large plots of expansion space they still have. I would much rather see any number of other things go there. Coco, Villainsland, any kind of New New Fantasyland or expanded Liberty/New Orleans Square concepts, but not Carsland in 2027-28.
We've been discussing Carsland in WDW for over a decade now. If it wasn't the right choice for Hollywood Studios in 2014, I don't see how it should be anything more than a last resort for Magic Kingdom in 2024. I doubt the idea that they can't afford to spend R&D on a new slate of lands/attractions, but if they honestly can't then they shouldn't build anything here at all.