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WASHINGTON (AP) - If motorists used rechargeable "plug-in" hybrid-electric vehicles in large numbers, the U.S. could see a significant drop in greenhouse gas emissions by the middle of the century, says a study released Thursday.
Researchers estimated that with a market share of about 60 percent or more plug-ins, the vehicles could help reduce approximately 450 million metric tons in greenhouse gas emissions a year by 2050. The reductions would be the equivalent of removing 82 million passenger cars, or about one-third of the cars currently on the road.
The study was conducted by the Electric Power Research Institute, a nonprofit research group, and the Natural Resources Defense Council, an environmental group. It was based on an analysis of data from the federal Energy Information Agency and EPRI.
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