My administration is going to put in place a series of policies that will ensure that in four years, the average new American car will get 300 miles per gallon of petroleum.

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For driving, no fuel is yet greener in the proper sense of using fewer overall resources than petroleum based gasoline, and we can acknowledge that an electric car is actually coal-powered.

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For roughly half the price of the Volt, you can get the Cruze, a car that promises better gas mileage on long highway trips, when both are running on petroleum.

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For starters, while many car engines currently can run on a blend of 10-percent ethanol and 90-percent petroleum gas, bumping that cocktail to 15-percent ethanol, or E15, will result in a warranty and liability migraine for car owners whose older models are unable to digest the blend.

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