Gas price spike driving fuel-efficient auto sales
DETROIT, Mich. -- Rising gasoline prices are driving up the sales of fuel-efficient cars.
That's good news for Detroit automakers, who are finally beating their overseas rivals.
General Motors said in March the company sold 100,000 fuel-efficient cars in the U.S. That's a first for the company.
GM reports demand rose for all of its 12 models that get 30 miles per gallon on the highway.