It could blend in well right behind Thunder Mountain, yeahAgree 100%. That’s why Encanto Land made no sense for MK but Villains Land would fit nice. The lands at MK should be more general where IP based rides that fit the land would be fine IMHO.
That being said, the Radiator Springs Racers ride could maybe fit as a ride in Frontierland with the mountains and desert theming. Not my first choice for sure, but better than a stand alone Cars Land.