I just now found it, but using the way I showed in the above post does work. Do you know why I can't set the car to be only entered on touch, not overlapping? I'd like to have my cars not go through eachother but I'm not sure how to fix it. And I'd rather not start a whole new discussion if possible.
This is what would I do :
1. your cars need solid behavior
2. since you cannot overlap them with player any more (because of solid behav), I would turn 43 into that on picture
(I set minimum distance as Car.Height, you can sat anything else you want, it must be bigger than sides of car)
Also other suggestions:
3. your hit box on Car, Player and some other objects is too complicated, you have more than 10 collision points on them. That will eat resources of any computer that tries to run it. You can put it in 4 points, nobody till complain if small part of player, like gun, overlaps with car.