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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.

The U.S. may begin refilling its emergency oil reserve when crude prices dip below $80 a barrel, according to people familiar with the matter.

WASHINGTON — Sharply lower prices for gas and cheaper used cars slowed U.S. inflation in August for a second straight month, though many other items rose in price, indicating that inflation remains a heavy burden for American households.

The national average price of diesel slid 5.1 cents to $5.033 a gallon, according to Energy Information Administration data released Sept. 12.

The Pennsylvania Turnpike is jumping into solar energy production to power its maintenance and office buildings with a long-term goal: using solar-generated power to electrify portions of the toll road so electric vehicles can charge as they travel.

President Joe Biden is poised to sign an executive order Sept. 12 to help expand U.S. biomanufacturing and reduce reliance on China.

Officials within President Joe Biden’s administration are hunting for ways to head off a feared spike in oil prices later this year, including the possibility of an additional release from the nation’s emergency crude reserves.

Nikola Corp. won a court order preventing founder Trevor Milton from using certain company communications in his defense against criminal charges that he lied about the company’s products to mislead investors and prop up the stock.

Diesel demand in California is soaring as the risk of blackouts in the state spurs big power users to load up on fuel for generators.