RV HAVING FUN YET?

The Sutherlands, Larry and Linda, middle Americans, are getting up in years. Larry, retired, likes to putter around the lawn with his dog, Trinket. Linda's venue is her kitchen, well-equipped, with microwave and freezer. Their home is comfy and welcoming, with wall-to-wall carpeting, a floral arrangement in the front window, wind chimes at the door and an illuminated sign hanging out the front. But the Sutherlands have no permanent zip code. No phone lines. They pay no property taxes. Their pad has wheels. It's a 35-ft., $65,000 Fleetwood Southwind, one of the thousands of recreational vehicles, or RVs, that Americans are...