"Transportation dominates our daily existence. Thousands, even millions, of miles are embedded in everything we do and touch. We live in a door-to-door universe that works so well most Americans are scarcely aware of it. The grand ballet in which we move ourselves and our stuff is equivalent to building the Great Pyramid, the Hoover Dam, and the Empire State Building all in a day. Every day. And yet, in the one highly visible part of the transportation...