When I got my speeding ticket, I was going 74 on the BQE. In NYC, the speed limit drops to 50mph for no reason on expressways/parkways; and the "bridge approach" to the Verazano has a speed limit of 45. That day, they had a few cops with LIDAR guns standing around a slight, blind bend in the road.
The worst was I had been going down to DC with a friend to visit my brother. On the way back up north, we were on the Turnpike and my friend was going 95 in my car. A cop pulls up behind us and motions for us to move over, just so that he could go faster.