"Three Cents a Mile" is the story of a roguish journey that lasted more than two years and circled the globe. The trip was fun, even hilarious at times. It was alway fascinating, like crossing Iran during its revolution. At times it was dangerous, like being held up by bandits in a Baluchistan desert. I met who must be the greatest pickpocket in the world, the dirtiest job in the world, and some of the world's saints. But it is primarily about the thousands of people who left home to drift across continental divides and what made them do it — and what made me do it.