some (at least in chicago) have the LT1 engine. thats a corvette engine if you didn't know. plus all the other cop car perks. (gun rack, HEHE, extra dash stuff for flashing lights, i heard some had nitro, dunno yet). they take out all the fune stuff when they sell it. so you basicly get a crown vic with a corvette engine. i would stay away from them becuase cops abuse the cars badly. oh one last thing, some of them have engine block warmers for winter, so you can start your car warm. (but again, maybe just here since its cold here)