Do the road with magnetic paint and add magnets to the cars. Playroom or little boy's room. I think the better idea would be to place this on the floor rather than teaching kids to drive cars on the walls.
I'm going to keep this list.I want a LOT of these things!For the girl who can't stay out of the kitchen. 50 useful kitchen gadgets you didn't know existed. There are some seriously cool things on here!