Nice vehicle physics, and great use of the theme - I like the sneakiness in a car game, that's unusual. I could see a future version of this game where you can hide from the cops by parking in a dark street, for example.
I never quite figured out what the circle around the car was, I assume it was noise or attention? It didn't seem to stop the cops from noticing me, haha.
Great job getting progression and a leaderboard in there too!