General Motors has recalled an additional 2.4 million cars over a safety defect linked to hundreds of deaths. GM began recalling its vehicles just this year despite knowing of a faulty ignition switch in its vehicles at least a decade earlier. It’s now recalled 13.6 million vehicles in the United States and 15.2 million worldwide. The Department of Transportation fined GM $35 million last week as part of a series of government probes into its concealment of the deadly ignition flaws.