Is that car really in service as a cop car? If so I think police are kind of abusing their money on these kinds of things.
I can't speak for the rest of the country, but around here some police departments have nice show cars for the DARE program. Usually they just bring them to community events, but sometimes they drag them. The cars they use are usually acquired through drug related seizures and then modded by local tech schools. No tax payer money involved.
Of course, I've never understood how showing kids nice cars drug dealers had will keep the kids from becoming drug dealers too.