One of my favorites games so far in the jam, very original and fun to play.
I think I encountered a few bugs, the cars were sometimes not moving while authorized to turn every route, I don't know if I made a mistake but it happened a few times. As others have said, the controls a quite clunky and that's the main reason of difficulty for me.
I hope you can work on this after the jam, i really liked the concept and would love to see it polished !