Tune Up Existing Technology for Quickest Reduction in Auto Emissions. By Carolyn Whelan, SciAmerican, March 5, 2009. "Refinements to the internal combustion engine, aerodynamics, drivetrains, and tires -- not hydrogen fuel cells or plug-in hybrids -- have the most potential to reduce emissions and kick up mileage, according to a new report."
2009-03-06
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