> The slower you drive, the longer the trip takes (applicable if you're not
> sightseeing), the more bored you get, the more your
attention/concentration
> slips, the more tired you become, you become more likely to fall
> asleep...BANG

OH, contraire, my friend.  High speed driving demands so much more of your
eyes and brain that you are more likely to get tired faster.  I routinely
make 14-plus hour drives and the slower pace of the Westy makes me less
tired.  When I used to blitz the same distance in my Jetta GLI at 85 MPH in
a shade over 12 hours my brain was fried when I reached my destination and
my nerves were strained.  This was largely due to all the dumb-asses who
drive in the left lane with their cruise locked at 2MPH over the speed limit
while attempting to pass the person in the right lane who had their cruise
locked at 1MPH over the speed limit.   That and all the State Troopers
hiding behind trees, overpasses and highway signs.