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DETROIT — Tesla reported April 20 that its first-quarter net earnings were more than seven times greater than a year ago, powered by strong sales despite global supply chain kinks and pandemic-related production cuts in China.

Plug Power Inc.’s bid to become a major supplier of carbon-free hydrogen just won the backing of one of the company’s oldest customers: Walmart Inc.

Rivian Automotive Inc.’s “launch mode” is impressive — at least on its trucks. The assembly lines are perfectly capable of cruising speed; they just need more computer chips.

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.

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.