If your gonna draft, get a C.B.

[occupant]

Keeping a steady speed helps just as much as drafting can. My wife freaks out if I get near a tractor/trailer, so I'll pick one out seems to be running at that 67mph ideal speed for her car and follow it at 2 seconds (which at 67mph is more like 200 feet) and if there's turbulence I'll creep up until there is none. Usually between 140-160 feet seems to be a good compromise between "feeling the pull" and "feeling the buffeting". I have no way of telling whether it truly improves mileage, but I feel like I'm pulled towards the truck at those distances.