A study has found that cars with very high gas mileage are less polluting than electric vehicles charged up in coal-heavy regions.
The Union of Concerned Scientists released a report today called "State of Charge" that finds that on average plug-in cars are less polluting than gasoline-powered vehicles in the U.S. But the greenhouse gases emitted from electric vehicles depends on the sources of electricity.
The study centers on a heated discussion in auto circles. Automakers have sometimes referred to electric vehicles as "zero emissions," which is misleading because most plug-in drivers charge their cars … Read more