Funnily enough, I think I’m biased against this IP because I’m the target audience, lol. Or at least my family is. Hotwheels are something I clean up about twice a day until I give up and let my living room be chaos. Quite frankly I’m kinda sick of looking at them and don’t particularly want to pay to go to a Disney park to see more of them. If it would bring some kind of magic into my son’s life, sure, but in reality I think he’d be happier going to Target and just buying a giant Hotwheels set.
I agree that it’s not impossible to make this IP work. I also think it’s important to note that Disney has struggled with presumably “easier” IPs in the recent past though. Plenty of people have been unhappy with Tiana, Star Wars, and Toy Story in the parks. Those should probably have been easier to assimilate in a charming manner - so what are the chances that they beat the odds to make Cars something really immersive and appealing? Again, I don’t think it’s impossible, but I would feel much better if they had chosen a safer project for this area. New Orleans Square would have been my first pick but Coco would be pretty promising as well. I don’t think Cars will be awful but my best guess is that it ends up being a 5 out of 10. We’ll see though.