GM says Volt to get 230 miles per gallon in city

DETROIT, MI – General Motors Corp. says its Chevrolet Volt rechargeable electric car should get 230 miles per gallon of gasoline in city driving.

The Volt is powered by an electric motor and a battery pack with a 40-mile range. After that, a small gasoline engine kicks in to generate electricity. It's due in showrooms in November of 2010.

Volt project manager Tony Posawatz says GM made the calculation of 230 miles in tests using a draft set of guidelines from the U.S. Environmental Protection Agency. GM says the Volt should be the first car to break into triple-digit gas mileage when the figure is confirmed in EPA tests.