**SNIP** To answer that question, I used the U.S. Energy Information Administration’s most recent long-term forecasts for the number of new electric vehicles through 2050, estimated how much electricity they’d use, and then figured out how much pollution that electricity would generate, looking at three key pollutants regulated under the U.S. Clean Air Act—sulfur dioxide (SO2), oxides of nitrogen (NOX), and particulates—as well as CO2 emissions. I compared them to the emissions of new gasoline-powered vehicles, using the EIA’s “real world” miles-per-gallon forecast, rather than the higher CAFE standard values. What I found is that widespread adoption of electric vehicles...