Tesla Motors CEO Elon Musk, under pressure after a fatal crash involving one of his electric cars, went on Twitter Sunday to say he's working on another "Top Secret Tesla Masterplan." He said he hoped to publish details this week.
The tantalizing message echoes an August 2006 blog post, titled "The Secret Tesla Motors Master Plan (just between you and me)," in which Musk unveiled the cars that became the Tesla Model S four-door family car and the Tesla 3 sports sedan.
Federal officials are investigating a May 7 crash in Florida that killed a man after his Model S cameras failed to detect a turning tractor-trailer and did not automatically activate the brakes.
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Palo Alto-based Tesla also said last week that shipments to customers fell in the past three months.