Very fun mechanics. I can feel it the addictiveness of it seeping in. My on nit pick would be that the car bouncing of walls isn't physics based and can be a bit awkward with the snap to an angle.
U EXPOSED ME. They're fake physics! I would've had levels with declines and such if I could get it sorted out but Isaac Newton and his stupid laws CONTINUE TO DEFY ME.
Also I know it'd be bad for the world but I kind of want a POLLUTINATOR now 🛢️💨