Thirty-five years ago, when "searching for America" was not yet the cliche it has since become, Steinbeck hit the highways with his French poodle, Charley. In a custom-built camper he named Rosinante after Don Quixote's steed, the two traveled the country--10,000 miles and 34 states. Their varied experiences comprise several slices of small-town back-roads Americana. Steinbeck laments the rise of plastic-covered everything, the vacuousness of "sad...