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RALEIGH, N.C. — As trucks become more complex and high-tech, so, too, do the repairs and maintenance systems, experts said Sept. 18 at the fall meeting of American Trucking Associations’ Technology & Maintenance Council.

First there was derision. Then mockery turned into admiration. Now a battle is unfolding between the most revered names in the automobile world, Porsche and Tesla Inc., on one of the world’s most challenging racetracks.

DUBLIN, Va. — The next generation of the 13-liter turbo compound engine from Volvo Trucks North America offers improved fuel economy over the current model, the company announced.

The Trump administration has decided to advance a plan to strip California of its power to regulate greenhouse gas emissions from automobiles on its own.

Ten regional-haul drivers, whose experience ranges from one year to 42 years, will participate in the Regional Run on Less fuel efficiency roadshow from Oct. 7 through Oct. 25, the North American Council for Freight Efficiency announced Sept. 10.

Natural gas-fired power plants, which have crushed the economics of coal, are on the path to being undercut themselves by renewable power and big batteries, a study found.

Porsche picked Niagara Falls, a Chinese wind farm and a solar site in Germany to unveil its first all-electric sports car, underscoring the new Taycan’s central role in turning parent Volkswagen AG into the world’s leading seller of battery-powered vehicles.

Startup truck manufacturer Nikola Corp. has secured a commitment of $250 million in funding from CNH Industrial N.V. — a leader in natural gas-powered trucks and buses and the parent company of Iveco trucks — in a move designed to accelerate the use of heavy-duty trucks that use battery-electric and fuel cell technologies in North America and Europe.

BYD Motors Inc. announced Milea Truck Sales and Leasing as its fully authorized truck dealer to support the New York metropolitan area.