Report: Bellwether California market sees share growth for Detroit automakers : Filed under: Car Buying , Chevrolet , Chrysler , Ford , GM , Honda , Toyota Ask any sales and marketing executive from Chrysler , Ford or General Motors what their company's greatest challenge is and they will unequivocally reply, "California." The Golden State accounts for 12.5 percent of all new car sales in the United States, but even more importantly, it is seen as a bellwether for the nation. As the home of the entertainment and consumer electronics industries, California has an outsized reach into our nation's popular culture - but Californians have historically been among the least receptive to domestic products. There's some evidence that trend may be changing, as domestic market share has been improving in the recent years, according to Forbes . Ford has seen its Blue Oval brand improve from seven percent in 2008 to over nine percent last year. Chevrolet topped si...