Mileage from megawatts

A new study finds that "off-peak" electricity production and transmission capacity could fuel 84 percent of the country's 220 million vehicles if they were plug-in hybrid electrics. This is the first review of what the impacts would be of very high market penetrations of PHEVs. Researchers at the Department of Energy's Pacific Northwest National Laboratory also evaluated the impact of PHEVs, on foreign oil imports, the environment, electric utilities and the consumer.