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The National Highway Traffic Safety Administration, which has the authority to force recalls, has opened two formal defect investigations that could ultimately lead Tesla Inc. to have to retrofit cars and restrict use of Autopilot in situations it still can’t safely handle.

PROVIDENCE, R.I. — Twitter said April 15 that its board of directors has unanimously adopted a “poison pill” defense in response to Tesla CEO Elon Musk’s proposal to buy the company for more than $43 billion and take it private.

Elon Musk has made a controversial offer to buy Twitter Inc., saying the company has extraordinary potential and he is the person to unlock it.

Tesla Inc. will start production next year of three products that have fallen well behind Elon Musk’s original schedule, including the Semi.

AUSTIN, Texas — Tesla delivered 310,000 vehicles in the first quarter, up about 68% from the same period in 2021, the company said April 2.

Recent proposals from Alphabet Inc., Amazon.com Inc. and Tesla Inc. tell us one thing: Stock splits can spark big rallies as retail traders pile in.

Tesla Inc. gained in early trading March 28 after the carmaker said it plans to seek shareholder approval for a move that would enable its second stock split in roughly two years.

Elon Musk won’t have to testify in the first case set for trial that blames Tesla Inc.’s Autopilot for a fatal crash, a Florida judge said.

Tesla Inc. raised prices on all its vehicles after CEO Elon Musk said costs were increasing at the companies he runs.

Tesla Inc. defended the safety benefits of its Autopilot and Full Self-Driving driver-assist systems in a response to lawmakers who have criticized the company’s marketing of the technology.