Will buying an electric car make an environmental difference?

Mercurynews.com
April 4, 2011

Sure, you might get a carpool sticker and a tax break. But if you buy an electric car, will it make much environmental difference?

Experts say that depends on three factors: What were you driving before? How is your electricity generated? And how many other electric cars are going to be sold?
In many cases, people who trade gasoline-powered cars for electric ones won't be dramatically lessening the smog they emit. But when it comes to global warming, even when emissions from generating the electricity are taken into account, electric vehicles have a much smaller carbon footprint than gas-powered vehicles because they are much more efficient. However, it will take a decade or more until enough electric vehicles are on the road to make a significant impact.
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