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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.

Who gets a ticket in a driverless car? It turns out no one does, the San Francisco Police learned recently.

Twitter Inc.’s shares slid after Elon Musk decided not to join its board, a stunning twist to a weeklong saga that has captivated the tech community and touched off renewed speculation about the company’s future.

AUSTIN, Texas — Tesla will build a vehicle dedicated for use as a robotaxi, and it will start making three new vehicles next year, CEO Elon Musk told fans at a party celebrating the opening of a Texas factory.

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

U.S. Xpress Enterprises and the self-driving trucking company Kodiak Robotics Inc. are teaming to run an autonomous freight route, the companies announced April 7.

Aurora Innovation Inc. has announced a deal to haul freight on a route between Fort Worth and El Paso, Texas, for Werner Enterprises.

Elon Musk is joining Twitter’s board of directors a day after disclosing that the Tesla CEO took a 9% stake in the social media platform.

Alphabet Inc.’s Wing is set to begin the largest drone-delivery test program so far in the U.S., starting April 7 in the Dallas suburbs.