File photo of a customised Volkswagen logo adorning a VW Beetle car in Hanau, Germany, November 12, 2015. Volkswagen has set a deadline at the end of November for its whistleblower programme designed to encourage workers to disclose information about the carmaker’s two emissions scandals in a move to speed up investigations. Europe’s largest carmaker has been making slow progress in finding out who had knowledge of the rigging of diesel emissions tests two months after the manipulations became public in the United States, and last week also admitted to cheating on carbon dioxide emissions certifications. REUTERS/Kai Pfaffenbach/Files