cute concept! i love the art and colours of the scene.
felt a bit unforgiving when you 'stop' a burning car, sometimes it just gets stuck and no cars can pass through, may help to ensure if a car doesnt get through it disappears / falls off regardless. also i understand some of the difficulty is supposed to come from trying to keep track of everything at once, but this is made a bit harder because of the distracting background, could make the roads pop out more from it, even just by simply darkening bg, or making it a different contrasting colour.