Actually I think unmarked cars are great. The element of blending in and surprising violators.

How many times have you been on a highway and you see some idiot driving like a maniac, and you think, where are the cops now???!??

I see this all the time, and once, A cop was behind me, threw his lights on, passed me and pulled over an idiot driving like a maniac. I was like, WOW!!

Also, unmarked cars are great when someone calls in a suspicious character or something suspicious at home even a business.

A cop in an unmarked can get closer to the scene without people disappearing as fast.

I think it is a great tool to protect us.