Too true. I cannot tell you the number of times, since I've been working such long hours, that I've pulled way off the road, or into a parking lot, if I'm closer to a town; just to shut my eyes for a few minutes, or to get out and walk around for a bit. If my eyelids get heavy, I pull off the road. I've never needed more than a 10 minute catnap or walk to get myself the rest of the way home, but I'd take it if I did.