Took a 3 week road trip recently in the box. The general route from Illinois was up through Minneapolis, 90 across SD, 2 across MT ID WA into Seattle. Then up to Cape Flattery & down the coast on 101, cut across OR to Crater Lake, continue to Reno, across UT CO up to WY then NB IO & back to IL. All in all the car ran like a champ, averaged 31 MPG with an average speed of 51 MPH. I noticed the average MPG with a full tank cruise at 65, it will read 36MPG then gradually drop down to 33-32MPG with time, Used up my last free oil change in Reno. The standard seat got pretty hard...fixed with 2" foam cushion. Windshield cracked with rock, fixed in Seattle. Ended up sleeping in it 2 nights from lack of motel rooms where I was.
Things I would change are get a better air mattress and to have a bug screen in the lower grill. Some meaty grass hoppers actually dented the condenser fins.
The photo is just outside Rocky Mountain National Park after another downpour.

 

And I thought my 1200 mile trip the other weekend was long...

Or my two cross country trips moving to and from AZ/NJ.

 

very nice view you got there. sounds like a good trip