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NEW YORK — California is suing Amazon, accusing the company of violating the state’s antitrust laws by stifling competition and engaging in practices that push sellers to maintain higher prices on products on other sites.

A former Nikola Corp. contractor whose allegations of fraud at the electric truck company helped spur a criminal investigation told a federal jury he made $600,000 off a short seller’s report on Nikola.

DETROIT — President Joe Biden, a gearhead with his own vintage Corvette, is showcasing his administration’s efforts to promote electric vehicles during a visit Sept. 14 to the Detroit auto show.

Class 8 U.S. retail sales in August reached their high point for the year, clearing 23,000 for a 29.7% increase compared with a year earlier, Wards Intelligence reported.

The owner of brake-lamp technology with a pulsating bulb feature intended to help reduce rear-end collisions with trucks and trailers has asked a federal appellate court to compel the Federal Motor Carrier Safety Administration to act on a long-pending exemption request to permit the company to deploy the system.

The percentage of female technicians working at transportation companies remains low, the Women In Trucking Association Index found Sept. 12.

Daimler introduced major updates to the interior and electrical systems of its M2 and SD models, including new safety and connectivity systems.

MEXICO CITY — Mexico and the United States plan to take advantage of the Biden administration’s massive investment in semiconductor production to push the integration of their supply chains and cooperate on expanding the production of electric vehicles through Mexico’s nationalized lithium industry, officials from both countries said Sept. 12.

Kenworth Truck Co., a brand of Paccar Inc., announced the new Paccar TX-18 and TX-18 Pro automated transmissions for Class 8 heavy on-highway and select off-highway vocational applications are now available for order.

Hyliion Holdings Corp. announced Jon Panzer joined the company as chief financial officer.