A fascinating account of the greatest road trip in American history. On July 7, 1919, an extraordinary cavalcade of sixty-nine military motor vehicles set off from the White House on an epic journey. Their goal was California, and ahead of them lay 3,250 miles of dirt, mud, rock, and sand. Sixty-two days later they arrived in San Francisco, having averaged just five miles an hour. Known as the First Transcontinental Motor Train, this trip was an adventure,...