For 2009, General Motors offers 18 models in the U.S. that get 30 miles per gallon on the highway, more than is expected of any other automaker. They include cars, crossovers and SUVs from GM’s Saturn, Chevrolet, and Pontiac brands. GM is not only poised to lead the industry again this year, but it also leads in subcompact and midsize non-hybrid car segments.