The U.S. National Transportation Safety Board said it's "unhappy" that Tesla made public information about a deadly crash involving a Model X vehicle. This file photo taken in 2017 shows billionaire tech entrepreneur Elon Musk, founder of the Tesla electric car company and the SpaceX aerospace exploration firm, speaking at the 2017 International Astronautical Congress 2017 in Australia. Tech billionaire Elon Musk's bad spell is continuing into a second month, amid a spat with a federal safety agency, an auto recall and production issues, an adverse court ruling, and a debt rating downgrade. Shares of the Musk-led electric car company Tesla (TSLA) were down 2.4% at $259.65 in Monday afternoon trading, recovering from a more than 6% drop earlier in the day amid National Transportation Safety Board displeasure with the firm's disclosure of preliminary details about a fatal Tesla crash. Christopher O'Neil, an NTSB spokesman over the weekend said the safety agency was unhappy with Tesla's announcement that its Autopilot partial self-driving system was engaged when one of its Model X electric crossover SUVs crashed on March 23 in Mountain View, Cal., killing the driver.

The U.S. National Highway Traffic Safety Administration and the National Transportation Safety Board said Monday they are sending teams to Tempe, Arizona, to investigate an accident involving a self-driving Uber vehicle that killed a pedestrian.