See image:
If I'm not totally dumb the car would move when the right magnet would not be attached to the car, at same distance of the booth magnets.
So why would it not move?
[Physics] Why doesn’t this perpetual motion machine using magnets work
electromagnetismperpetual-motion
Best Answer
A simple symmetry argument might help here. Try to abstract everything away from your picture that is just a distraction. In the end it might look like this:
Why should this move to the left or to the right? It cannot and therefore adding a person and wheels does not change the problem.