You don't fuck around with any Federal LEO's. The Blue Ridge Parkway, which is Federal, runs just on the outskirts of where I live. There is even a "commuter" section that people often use. Of course it's a nice curvy road without a lot of traffic at times, so tempting for letting it out a bit, and the maximum speed limit anywhere is 45.
DON'T! It is a "federal rap", and a friend ended up paying over $5,500 in fines. He was 10 - 15 over, plus he got off where he intended to anyway to go home. The park ranger also hit him with "attempting to elude".