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 The National Highway Traffic Safety Administration said last week that it doesn't plan to investigate the Oct. 2 incident because there is no indication that it was caused by a safety defect or that the Model S is violating federal safety standards. The agency doesn't investigate accidents outside the U.S., but does collect information on foreign crashes from automakers or from police in those locations. Tesla shares fell 4 percent to close at $162.86. They have fallen 16 percent since the Oct. 2 crash.
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