Book excerpt: A night train, a freight train, a high-speed train. Racing across the country, from coast to coast. All aboard!Climb aboard a red-striped Commuter Train in the East. Switch to a blue Passenger Train rolling through midwestern farmland. Then hop on a Freight Train, soar over mountains on an Overnight Train, and finish on a High-Speed Train as it races to the West Coast.Trains are moving. Fast and loud, colorful and powerful. Experience their sights, sounds, smells--and the engineers and conductors who make them go--as they roll across the country.