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NHTSA has opened an investigation into Zoox, the autonomous vehicle subsidiary of Amazon.com Inc., after two incidents in which its SUVs suddenly braked and were rear-ended.

DETROIT — Federal highway safety officials want Tesla to tell them how and why it developed the fix in a recall of more than 2 million vehicles equipped with the company’s Autopilot system.

NEW YORK — Shares of Tesla stock rallied April 29 after CEO Elon Musk paid a surprise visit to Beijing over the weekend and reportedly won tentative approval for its driving software.

DETROIT— The U.S. government’s auto safety agency is investigating whether last year’s recall of Tesla’s Autopilot driving system did enough to make sure drivers pay attention to the road.

The federal government awarded Fort Worth, Texas, $2 million to test weather sensors on autonomous freight truck routes.

DETROIT — The driver of a Ford electric SUV involved in a February fatal crash in Texas was using the company's partially automated driving system before the wreck, investigators said.

HANOVER, Germany — Volkswagen Commercial Vehicles is to test its self-driving ID Buzz AD electric van for the first time under realistic conditions and with passengers on board.

DETROIT — Most electronic systems that take on some driving tasks for humans don’t adequately make sure drivers are paying attention, according to an insurance industry study.

Truck maker Navistar Inc. has partnered with Plus, a developer of automated driving technology, to pave the way for hub-to-hub autonomous Class 8 trucks.

Sidelined for four months following a crash, Orlando’s self-driving bus downtown planned a restart of its test runs March 5.