An interesting idea, a rather difficult puzzle, with several elements to keep track of. But the control is a little confusing, I still do not understand why sometimes the cars turn themselves. I guess I misunderstood something after all, sorry.
Hey thanks for the feedback! So you only control one car at a time (the highlighted one), and you turn left and right (so when you're facing downwards left turns you right and right turns you left). If we had time we would make it WASD with the corners.