The Georgia State Patrol.
The bane of my commute. Nothing makes your stomach drop more when driving than having one appear behind you, or coming towards you, especially when you tend to drive * a few * miles over the speed limit. I realized last week my drive was more fun when I stuck to around the speed limit, and didn't have to waste time looking for cops.
I did get through a road block though with an expired license. I guess I met no profile of what they were looking for and it wasn't worth the hassle, lol.