General Motors Tripled Sales Of Chevy Volt In 2012, Selling One Million Vehicles Over 30 MPG

General Motors Tripled Sales Of Chevy Volt In 2012, Selling One Million Vehicles Over 30 MPG: General Motors had a record-breaking year for fuel-efficient autos in 2012. The company became the first American auto manufacturer to sell more than one million vehicles with a 30-mpg fuel rating. And due to a surge in demand from Califorina, GM tripled sales of its electric model, the Chevy Volt. Motor Trend reported on the [...]/p