The cost of green cars
The Union of Concerned Scientists has posted a study on the effects of electric vehicles on global warming emissions, titled State of Charge: Electric Vehicles' Global Warming Emissions and Fuel-Cost Savings Across the United States. They cover not just the cost to consumer of the electricity, but also the hidden costs and emissions of electric power generation in different parts of the country. Their conclusions are that consumers save money over gasoline-fueled cars, in all parts of the country. Further, roughly 45% of the population lives in areas in which charging a car on the electic grid produces less global warming emissions than both standard and hybrid gas-electic cars, producing emissions equivalent to getting over 50 miles per gallon in a gasoline-powered car.