The answer depends on location, according to previous studies on EVs. The study from NBER evaluated both gas and electric-powered vehicles to determine their effect on the environment. A surprising recommendation is a new road funding option.
Jul 1, 2015   CityLab
Arguably just as important than the sales of new vehicles, e.g., hybrids and EVs, are the consequences of not buying new cars.
Dec 14, 2014   Scientific American
In EPA’s leadership blog, Administrator Gina McCarthy announces the agency's new standards to reduce the sulfur content in gasoline by 60% in 2017 and new Tier 3 emission standards for cars and light trucks to reduce criteria and toxic air pollutants
Mar 5, 2014   EPA Connect