Volkswagen AG said Wednesday it has narrowed its list of states competing for a potential U.S. production facility to Alabama, Michigan and Tennessee. The German automaker said it was still evaluating whether to build a new plant in the United States and would make a final decision this summer. "We reviewed many excellent sites and the process to narrow down the locations was not an easy one. We look forward to continuing to work with the states of Alabama, Michigan and Tennessee as the evaluation moves forward," said Stefan Jacoby, Volkswagen Group of America's president and chief executive.