Well, we didn't shrink the Cars. There are just, like, tiny vehicles that we want to talk about. Ya know, like, Hot Wheels, model cars and planes, toy planes, roombas, etc. It may not sound like a lot, but it turns out that Roombas are a biomechanical military experiments who are programmed to hate and destroy dirt. That's literally canon within the Carsverse, so imagine the nonsense we come up with on our end.