Jon - He's old, but he's slow
I guess I am in the middle. I just drive the speed limit or a hair slower so that I don't have to spend all my time passing cars / trucks. This didn't work real well on my recent trip to Tennessee because every time I hit a hill in Arkansas, the trucks would slow down and I would maintain, so we just eased by them.
You can't do that on I-45 heading to Houston from Dallas cuz everyone drives like they are possessed. When you get to Huntsville, it turns into a speeding frenzy with everyone in the left lane trying to drive 80 and some of us trying to drive the speed limit mingled in with the occasional blue hair cruising along at 60 causing the water-flowing-around-a-rock-in-the-river effect.
With the lights all working and driving like a sane person, I don't think I have ever had a cop look twice at us. But we seem to attract a lot of beggers at the truck stops. What's up with that?