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The author notes that transportation modes in this country have supplanted each other linearly. The last two centuries showed each of the following modes to be dominant and then, in its turn, each was replaced by its successor as the dominant mode - canals, railroads, streetcars, bicycles, automobiles, and airplanes. All successful transportation modes have been successful because they were subsidized by the government. What is the future of transportation? Personal transporters such as the Segway are mentioned, as well as high speed trains and smart highways.
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