Per John B.:

I don't know whether you remember Uncle Tom McCahill's articles in
Mechanics Illustrated but he wrote an article about speed on trips. He
drove a car coast to coast and return. One way he drove as fast as
possible and on the return he drove at the legal posted speed. The
difference was measured in hours.

I get to do something like this when I carry my 20' surfski down to the
Jersey shore on my roof racks.

It's so long that I worry about windage, so I keep to the speed limit:
65.

Normally, I make the drive at traffic speed - which is 72-73 in the
right lane and 75+ in the left lane.

Time diffs I have observed have all bee less than five minutes for an
80+ mile run.


In a similar vein, I drove down to Florida with my college roommate one
spring break - in his car.

He was driving *really* fast - as in 90+ mph....

We would pass these big 18-wheelers with the sleeping cabs doing 55 mph.

But at the next gas stop, we'd be standing there filling up the tank and
see same those same rigs just chugging on by...
--
Pete Cresswell