Partially. It originated as a concept to focus more on California's car culture in the 1950's and '60's. Then Cars came out and they added Radiator Springs Racers to the land. Few years later, Harry Potter opens at Universal Studios Orlando and it's a smash hit so Disney feels they need to make the entire land IP based like Harry Potter is for that full immersion factor. They chose Cars because it was already there, carried the same general theme, and did sell merchandise easily already. But unlike Mission Breakout and Marvel land, it did not originate as a thematically out of place scheme to make money.
Also, let's not forget, Cars Land was in the planning stages for years, and then was under construction for years. It was an entirely new land that made thematic sense in the park and improved it as a whole. There was also no Cars movie being released to sync up with its opening. Mission Breakout, on the other hand, was a 6 month overhaul that barely changed anything and opened alongside a Guardians of the Galaxy movie. A beautifully planned out land vs a quick, cheap overlay for a preexisting attraction to advertise a movie.
