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Diesel prices nudged slightly lower, dipping three-tenths of a cent to a national average of $3.794 a gallon, according to Energy Information Administration data released June 12.

Diesel and gasoline shortages prompted the governors of Nebraska and South Dakota to issue emergency executive orders temporarily waiving federal HOS mandates for fuel haulers.

Tesla Inc.’s charging technology won more backers as a handful of players in the electric vehicle power industry said they would offer compatible equipment.

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With its potential use and broader recharging capabilities, the medium-duty truck market will adopt battery-electric vehicles faster than the heavy-duty one will, experts say.

PHILADELPHIA — An elevated section of Interstate 95 collapsed early June 11 after a tanker truck carrying flammable cargo caught fire, closing the segment indefinitely, authorities said.

Tesla Inc. may earn as much as $3 billion by 2030 thanks to deals with Ford Motor Co. and General Motors Co. for their electric vehicles to use its charging network, according to one analyst.

Lordstown Motors Corp. intends to sue backer Foxconn Technology Group as the companies remain at odds over a stalled investment in the EV startup.

A new high-temperature steel alloy rendering engines more durable and efficient has been developed by a team from Cummins Inc. and Oak Ridge National Laboratory.

DETROIT — Electric vehicles made by General Motors will be able to use much of Tesla’s charging network beginning early next year under an agreement the two companies announced June 8.

Iowa is leading 19 states in a lawsuit against the U.S. Environmental Protection Agency for backing California’s future ban on heavy diesel vehicles.