Railroading is so much more than just transportation. Railroads were the workhorses of the Industrial Revolution and still carry more tonnage over land than any other form of transportation. Railroads made possible the westward expansion of the United States. Railroading created many a millionaire and inspired many a legend. Railroading is a bedrock industry whose history is inseparable from the history of the United States, or, for that matter, any other country in which railroads have long been in service. Even model railroading is a big business. How many industries have spawned hobbies?