I came across this. No, it's not parking enforcement. This fully marked Chevy Sonic is a one-car speed trap, equipped with all the gadgets to make it a fully automated speed camera, like the one they use in Europe but not here. Although I think it would also make an excellent riot-control vehicle or high-speed tactical pursuit car.

While driving through Iowa yesterday

(Note: I did not take this picture. It is off the Windsor Heights PD website)