Yesterday federal regulators imposed the biggest punishment they could on G.M. and condemned it over its failure to promptly report a defect linked to 13 deaths. G.M. will pay a $35 million penalty — the maximum allowed and the largest ever imposed on an automaker — and will be required to make wide-ranging changes to its safety practices that will be supervised by the government, another first for an automaker. The New York Times has more on the story here.