Interesting question, Dave! I don't travel much for work (I don't drive at all, actually, get trains when I do have to travel) but I know exactly what you mean...
The only thing I can think of that I've read recently is
Cranky Fitness: Road Trip: Sacrificing For Science ... a really amusing post by "Crabby McSlacker" of
Cranky Fitness, about her road trip.
I did have a poke through my archives to see if I had anything relevant, but couldn't find anything specific enough. I'll jot it down as something to muse upon and write about in future, because I'm sure lots of people face the same problem.
Thanks for the idea!
Ali