I got pulled over for five over (80 in a 75) on the turnpike to Miami, OK about two weeks ago. I told him five over is a bit tight and he said they were tighter when using aircraft. I wanted to ask if that was because they needed to pay for the airplane but resisted the urge to be a smartass. Fortunately, I got a warning. There is no reason to have a different standard based on the different vehicles they use to nail you. However, that may be the policy in many other places.