The Arkansas River Valley, Colorado, a couple years ago. Most people yearn for a long, lingering autumn, full of crisp mornings and warm afternoons, of apple festivals and glorious colors. A season without snow, rain, humidity or bugs. Many autumns don't quite live up to this dream, because it gets rainy and blowy just when the colors get going. Down go those beautiful leaves, down into the first of the winter mud. Living on wheels would seem to be the perfect solution. Just imagine a gradual migration, surfing the wave-crest of colors southward! That is what I expected out of my first fall migration, many equinoxes ago. Much to my surprise, when the October weather collapse happened up north, it quickly went south. There was no six-week-long autumn like I had fantasized, even when migrating from northern Michigan to the Texas Hill Country. The moral of the story is that latitude is over-rated. Moving to the western states, latitude proved to be even more over-rate...