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Silicon Valley automaker Tesla is tentatively set to reveal its electric semi-truck in October, CEO Elon Musk said

ALLENTOWN, Pa. — Mack Trucks introduced the Mack Anthem, its long-awaited new highway tractor, to an arena packed with dealer representatives, who company executives thanked for their patience and who were promised a truck that boasts gains in fuel efficiency, driver comfort and technological innovation compared to previous models.

TA Truck Service, a unit of TravelCenters of America, moved its national call center to a 32,000-square-foot facility so its RoadSquad unit can expand its customer base to provide services for additional fleets nationwide.

Driver hours-of-service rules are being relaxed in 26 states and the District of Columbia under a state of emergency announced by the Federal Motor Carrier Safety Administration on Aug. 31.

Four California senators have called for significantly increasing state funding to curtail pollutants from trucks and buses.

A notice from the U.S. Environmental Protection Agency to revisit parts of the Phase 2 final rule on greenhouse gas emissions from heavy- and medium-duty trucks isn’t likely to create changes quickly, as the agency has not presented plans for expedited action and environmental groups are vowing to pursue a challenge in a federal appeals court — once the case is no longer being held in abeyance.

COLUMBUS, Ind. — Cummins Inc. has unveiled a concept truck with an all-electric powertrain, highlighting the diesel engine manufacturer’s commitment to electric power as an important part of its future.

It could be years before drivers on U.S. highways catch a glimpse of a tractor-trailer rig cruising down the highway with another truck trailing a perilous 20 or 30 feet behind.

Run on Less, a first-of-its kind roadshow to demonstrate how trucks use technology to achieve fuel efficiency, is set to begin.