If there's another road available, I tend to avoid the interstates
whenever possible in my Vanagon..or any other vehicle.  I find those routes
very boring.  Your fellow travelers, when using interstates, tend to be less
interesting to me also.  I sometimes lose track of which state I am in when
I pull off  an interstate 'travel exit'.  You have your "Same-O  Same-O"
multi-pump island and C-store with it's imbeded fast food outlet, your big
rig parking areas, your Super 8 and Dennys..Your fat grumpy hordes of
travelers and the family that leaves their vehicle at the pump while they
goe inside to buy Cheetos and Slurpies... Ten or 15 forgettable minutes and
then you get back on the super slab for another couple hundred miles...and
get off again...Boring.  We even tried entertaining ourselves on one trip
across I-84 near Twin Falls-Boise-Mt Home.. by trying to guess what the
brand of RV was as they approached....Have you ever noticed that identical
RVs have very different and enthusiastic names?  Check em out next
time...somethin to do while you  sit behind your van's wheel and endure an
interstate passage...
  Even if I add miles to a drive, I tend to choose the smaller roads, if
possible..Sure, sometimes I don't 'get somewhere' quite as quickly and maybe
my cell phone won't even work in outback Nevada or Eastern Oregon...But
that's Ok..And with the vanagon, I never worry about finding a cheap motel..
  Don Hanson