You should come to Atlanta. We average about 20mph+ over the speed limit on our Interstates with almost no chance of a ticket. In fact, the police are regularly on the news stating that they only look for those doing 85mph or higher. On weekends, 80mph is many times the average speed for traffic, even in the slow lane. This is not fun or amusing to visitors though when you consider that lots of big rigs and other large vehicles are part of the flow of traffic.
Drive 5 miles outside of the "metro Atlanta area" to the smaller rural areas and you can find yourself in the same situation with a ticket for going 5mph over the limit.
Kind of makes me wonder why we have 55mph limits on our Interstates when it is never enforced as an actual limit.
You are so right any time I make that turn off I-65 coming to Atlanta from Birmingham its like hopping on the track at the Talladega Super Speed Way. It's either do 85+ or get ran over, honked at, or flipped off by everyone.