...which, in New York, is grounds for both a ticket and reasonable cause to stop and [in some cases] search the vehicle.
Goose, meet gander.
As the police are public servants performing public duties and so have no reasonable expectation of privacy, I think we should start photographing cop cars with identifying information at every opportunity. There should be an app for that, by which the movements of police can be tracked and made available to the public in real time.