What everyone else has said so far! I can't believe you have even found one with that low of miles.... Any police vehicle you buy you can be guaranteed that it was driven very hard, most of the time. Just think about it, if you were driving a car that wasn't yours and it didn't matter what you did to it...wouldn't you drive the piss out of it? I know I would!
On the other hand, it wouldn't be hard to replace the seats, the center console is fairly expensive though. No carpet wouldn't be that big of a deal, if you don't care, and you may have to put speakers in the rear doors and in the back?