Which is why D.C. is going hardcore strict on speeders doing over 80 MPH on interstates because speeding tickets alone are not stopping drivers from doing it and riding peoples rear bumper when they can't. When one deterrent isn't working, you up the punishment until it does.
And I can honestly say that 80 MPH is about the fastest I've ever felt the need to drive and I don't even like going that fast. Saving an extra minute or two on my ride has never seemed worth it to me.