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Nikola Corp. founder Trevor Milton said he wouldn’t take the witness stand in his criminal fraud trial, as the defense prepares to rest its case.

WASHINGTON — President Joe Biden, a self-described “car guy,’’ often promises to lead by example on climate change by moving swiftly to convert the sprawling U.S. government fleet to zero-emission electric vehicles. But efforts to eliminate gas-powered vehicles from the fleet have lagged.

New York Gov. Kathy Hochul on Sept. 29 announced that the state will follow California in requiring all new vehicles sold by 2035 be zero-emission, setting in motion the regulatory process to implement a law she signed last year.

President Joe Biden on Sept. 28 warned oil and gas companies against increasing prices for consumers as Hurricane Ian neared landfall along Florida’s southwest coast.

WASHINGTON — All 50 states received final approval Sept. 27 to begin construction on a first nationwide network of electric vehicle charging stations that places one roughly every 50 miles along interstate highways, part of the Biden administration’s plan to spur widespread adoption of zero-emission cars.

Cemvita Factory Inc., a Houston-based biotech company backed by Occidental Petroleum Corp., says tax credits passed by Congress last month will allow it scale up plans to produce hydrogen using oil-eating microbes.

The national average price of diesel fell 7.5 cents to hit $4.889 a gallon, according to Energy Information Administration data released Sept. 26.

The U.S. Department of Energy, the private sector and a new national nonprofit have stepped up their respective efforts recently to bring hydrogen forward as a mainstream fuel for trucking, among other industrial uses.

To better position the use of advanced energy in the nation’s heartland, governors of seven states have formed the Midwest Hydrogen Coalition to spur creation of a robust hydrogen market, supply chain and workforce.

HANOVER, Germany — Nikola Corp. unveiled a prototype of a European-spec fuel cell-powered Nikola Tre Class 8 model and also announced that it is taking orders for the battery-electric version in the region.