These cars say, "Slow down!"

Isn't this impersonating a policeperson, or at least police car? Isn't this technically illegal? If it is, the police are looking the other way for these two police car look-alikes are parked in front of Mattress Depot and Discount Furniture on Exeter Road in the city's southern end.

No matter how many times my wife and I drive by the Mattress Depot we always slow down the moment we spot these two parked cars. Heck, we slow down and we aren't even speeding!