Volkswagen faces fresh accusations that it rigged its cars to avoid pollution standards. The California Air Resources Board says some of VW’s line of Audi luxury cars contained software that lowered carbon dioxide emissions under testing conditions. Regulators found that when cars were put into real-world conditions, the carbon dioxide emissions rose dramatically. Volkswagen previously admitted to rigging some 11 million vehicles worldwide, allowing them to emit up to 40 times more nitrogen oxide pollutants than standards allow.