How much pollution will a high speed rail system save in the United States?



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    President Obama has announced an 8 billion dollar investment in a high speed rail system, as part of the economic recovery act.  Rail transportation has proven to be far more energy efficient than cars or airplanes.  I don’t know that there’s an accurate means to quantitatively predict the amount of pollution the proposed rail system would save.  It depends on many factors, namely, how many passengers use the system.

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