The other DrC and I, and a friend drove from western Wyoming to eastern Idaho and back today. Outbound we took the U.S. highway and coming back we drove a 40 mile unpaved Forest Service road that runs through country that, save for the road and some wandering cattle, mostly looks the way it was seen by early settlers in the region.
In that whole 40 miles we passed exactly two moving vehicles, which makes it some of the loneliest road you'll find anywhere. I was glad my truck was new, healthy, and full of fuel.
Here in the Rockies there are loads of places where going off-pavement can take you into unpopulated wilderness. It's pure eye candy, the feeling I get while looking at it is really amazing.