Daimler says it’s investigating “possible indications of irregularities” in its process for certifying exhaust emissions in the U.S.The German automaker, whose brands include Mercedes-Benz, said it’s carrying out the internal review at the request of the U.S. Department of Justice and is “cooperating fully with the authorities.”The announcement follows the huge scandal that engulfed Volkswagen last year after it admitted rigging diesel engine emissions tests in America and Europe. The ...