As high-speed rail projects get going across the country, most of the work is going toward speeding up train service over existing lines, rather than building true bullet trains. California and Florida are going whole hog, however, with plans to construct railways to host 220-mph and 168-mph trains, respectively. Meanwhile, foreign firms with high-speed rail expertise are eyeing the more than $8 billion in federal money available to these high-speed corridors.

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