Trains, tracks and travel

It is difficult to realize that since the first edition of this book was published, nearly a quarter of a century ago, there has been a virtual revolution in commercial transportation, domestic and international. The internal combustion engine made possible the diversion to highways and airways much of the travel and trade which once belonged to railways, ocean routes, and internal waterways. The airplane, the motor bus, and the motor truck have brought about an amazing — a revolutionary — change in the character of the world's transportation service.