The Associated Press announced that General Motors (NYSE:GM) plans to sell a diesel version of the Chevy Cruze in the United States.After selling about 25,000 Cruzes in June, the car model past recurrent leaders such as the Toyota Camry and Honda Accord to become the best-selling car in the U.S.The diesel Cruze won’t hit showrooms until at least 2013, according to one of the people, both of who asked not to be identified because the company hasn't made a formal announcement.