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The millions of small civilian drones plying the nation’s skies can cause significant damage to airliners and business jets in a midair collision, new research commissioned by the Federal Aviation Administration concluded.

An Uber Technologies Inc. whistleblower made explosive allegations that a company team stole trade secrets to gain an edge over rivals, prompting a judge to further delay the ride-hailing company’s trial with Waymo.

Tesla Inc. said the expected price for its all-electric Class 8 truck will range from $150,000 to $200,000.

Mercedes-Benz, conducting the biggest test using drones to ship everyday items such as ground coffee and cellphones, said the mini-aircraft completed 100 drop-offs to strategically placed vans in Zurich with a perfect safety record, and more deliveries are planned for next year.

Nikola Motor Co. plans to locate its emerging network of hydrogen fueling stations to accommodate the logistics network of a major manufacturer, according to the truck maker, which did not identify the manufacturer.

Ryder System Inc. awarded a four-year fueling contract to Clean Energy Fuels Corp. to supply Ryder’s fleet of liquefied natural gas heavy-duty trucks serving Toyota Motor Manufacturing’s plant in Georgetown, Ky., Toyota’s largest production facility in North America.

Elon Musk knows how to make promises. Even by his own standards, the promises made last week while introducing two new Tesla vehicles—the heavy-duty Semi Truck and the speedy Roadster—are monuments of envelope pushing. To deliver, according to close observers of battery technology, Tesla would have to far exceed what is currently thought possible.

When Nikola Motor Co. President Trevor Milton pulled the wraps off the Nikola One prototype Class 8 truck last year and announced it would have a hydrogen fuel-cell power plant, it seemed a radical approach at the time.

Video: Cummins' Tim Proctor, left, talks with TT's Roger Gilroy about meeting the fuel economy needs of customers who are concerned about global warming.