I have seen quite a few unmarked cars (I am from GA originally). The most messed up story I can remember is a Crown Vic passed me like I was standing still when I was on my back up here a few years ago, it had the cage in the back, the brush guard, and all the other amentities. So I left it alone. Them another car passed me then passed him. Then he pulled him over. Can you imagine that conversation? They were both probably doing 90 if not 100 in a 65mph Zone.