"Sometimes, reality really bites. Alzheimer's has wrapped Mom's brain into knots; vascular dementia has attacked dad, and instead of carefree retirees, we have become caregivers. Regardless, dreams die hard, and we somehow stumbled into the purchase of a forty-foot motor home. That's when all four of us set out on this seven-week trek across sixteen U.S. states. Now, Dad stopped up the toilet again; Mom wet her last pair of clean jeans, and David...