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DETROIT — A U.S. investigation into Teslas operating on partially automated driving systems that have crashed into parked emergency vehicles has moved a step closer to a recall.

Tesla Inc. is facing stepped-up scrutiny from U.S. regulators who have received 758 complaints of cars made by the company that suddenly brake at high speeds, more than double the number of reported incidents earlier this year.

Electric carmaker Tesla Inc. needs to cut staff by around 10%, CEO Elon Musk said, noting he had a “super bad feeling” about the economy, according to an internal email seen by Reuters.

California regulators on June 2 gave a robotic taxi service the green light to begin charging passengers for driverless rides in San Francisco, a first in a state where dozens of companies have been trying to train vehicles to steer themselves on increasingly congested roads.

NASHVILLE, Tenn. — Futurist Nikolas Badminton explored June 2 how the trucking industry could change in the years ahead and what that means when it comes to driver recruitment.

Nicholas Schmidt of Standish, Mich., became owner No. 1 of Ford Motor Co.’s first electric pickup, the F-150 Lightning.

Aurora Innovation Inc. and FedEx have expanded their autonomous trucking partnership to include freight hauling between terminals in Fort Worth and El Paso, Texas.

Embark Technology Inc. saw its losses widen in the first quarter as the autonomous trucking technology company spent more of its capital on research and development.

Amazon.com Inc. says it plans to invest $1 billion in companies developing technologies in logistics, supply chain management and safety, as the retailer seeks to keep an eye on new ideas that might aid its core business.

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.