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Chevron Corp. posted disappointing profits after slumping values for some long-held fields hurt the oil giant’s ability to take full advantage of surging energy prices.

A professional answers our questions about challenge and innovations in his department.

A D.C. court of appeals ruling exempts trailers from federal greenhouse gas and fuel-­efficiency rules, but California mandates will create the same technology standards for many fleets, while others are adopting the technology because of the economic case for it.

The French-Japanese auto alliance of Renault and Nissan plans to invest $26 billion in electric vehicle technology over the next five years, the companies said Jan. 27.

A slump in global diesel stockpiles has left the market vulnerable to price spikes.

Tesla Inc. pushed back introductions of new models to next year, wagering the best way to continue expanding sales in the face of supply chain challenges will be to further leverage a narrow lineup of big sellers.

SEBASTOPOL, Calif. — Ford Motor Co. on Jan. 26 announced the launch of a pilot program that will equip winegrowers in Northern California with electric pickup trucks, cargo vans and software services in a bid to boost EV and technology adoption among farmers and other commercial customers.

LONDON — Bentley Motors is pouring billions into upgrading manufacturing to accelerate its electric vehicle development plan, joining other auto brands shifting away from gasoline engines, the luxury automaker said Jan. 26.

The U.S. Department of Energy announced the loan of 13.4 million barrels of crude oil from its strategic reserve as part of a renewed effort by the Biden administration to contain oil prices that have surged to their highest level since 2014.

General Motors Co. plans to spend $6.5 billion on an electric pickup plant and battery factory in Michigan thanks in part to a $1.8 billion incentive package put together by the state to make sure the automaker didn’t take a big piece of its EV business elsewhere.