That is the reason they lowered the speed from 65. They asked guys to drive a little slower if they had time. Like all weekend to do 800 miles or a load that doesn't pick up until the next day and you have plenty of time to deadhead there. Very few slowed down even if they had time (myself included). Then they lowered the speed. Now if I have time I slow down a little. If I have somewhere to be and can get an extra stop off I put it to the floor. They can see if you constantly run to the max and will probably hear about it.