Not going to lie, I let this sit on game over for a while just because the colliding cars are pretty fun to watch. Very bouncy and lively.
I enjoyed the idea! I would only maybe add that it could benefit if there was some way to know if a car was planning on turning. I thought I was being super clever by activating left and right lights simultaneously on my second go around, only to watch one turn directly into the other. That way, you may still want to only activate one light but you can get an idea as to whether or not you want to risk it.