'Natural-Gas Vehicles Will Run Best Without Subsidies'

'Natural-Gas Vehicles Will Run Best Without Subsidies'

Almost miraculously, the U.S. is both reducing its greenhouse-gas emissions and becoming increasingly energy independent. As Bloomberg News recently reported, the share of U.S. energy demand met by domestic sources increased to 81 percent through the first 10 months of 2011 -- the highest level in 20 years -- and emissions are expected to decline 12 percent by 2020.

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