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The Obama administration tried to strike a cautious compromise May 18 in setting quotas for a controversial renewable fuels program that pits Big Oil against Corn Belt interests.

The U.S. retail diesel average rose 2.6 cents to $2.297 the highest price this year, the Department of Energy said May 16.

DUBLIN, Va. — Volvo Trucks North America is laboring diligently to persuade federal and state regulators to ramp up standards on greenhouse-gas emissions in an orderly fashion so as not to scare off fleets from buying more fuel-efficient trucks that will be produced to comply with the Phase 2 rule expected later this year.

DUBLIN, Va. — Volvo Trucks North America is laboring diligently to persuade federal and state regulators to ramp up standards on greenhouse-gas emissions in an orderly fashion so as not to scare off fleets from buying more fuel-efficient trucks that will be produced to comply with the Phase 2 rule expected later this year.

Nikola Motor Co. will display a working prototype of a 2,000 horsepower Class 8 all-electric truck “later this year,” the manufacturer said.

The U.S. retail diesel average inched up 0.5 cent to $2.271, the Department of Energy said.

The nonprofit network Business for Social Responsibility said it launched an interactive database called Fuel Tool to support the transition to low-carbon commercial road freight.

Crude traded near $45 a barrel May 8 as Canadian wildfires knocked out about 1 million barrels a day of production, outweighing the new Saudi Arabian oil minister’s pledge to maintain the country’s policy of near-record output.

The U.S. average diesel price rose for the 10th time in 11 weeks, this time by 6.8 cents a gallon to $2.266 — the highest price since just before Christmas, the Department of Energy reported May 2.

WASHINGTON — The United States is enjoying a remarkable abundance of energy choices, much of it due to hydraulic fracturing, or fracking. However, there is a growing legal and regulatory challenge to reduce the production and use of fossil fuels by limiting their extraction and transport, a lobbyist said here in a briefing for an American Trucking Associations committee.