(http://media.il.edmunds-media.com/chevrolet/cruze/2011/ns/2011_chevrolet_cruze_f34_ns_63011_196.jpg) Chevrolet — once a powerhouse truck brand — said on Thursday that its cars have outsold combined sales of trucks, crossovers and SUVs in April, May and June of this year and are expected to represent 47 percent of the brand's sales for the first half of 2011.