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Although large gains have been made in cleaning up new diesel engines, nearly two-thirds of all commercial trucks don’t meet the latest emissions standards. As of 2017, some 36% of all commercial trucks (Classes 3-8) in the United States rely on the newest generation of diesel engines — a 6% increase over 2016, according to the Diesel Technology Forum, which cited the latest data.

The U.S. average retail price of diesel rose 0.3 cent to $3.163 a gallon, the Department of Energy reported, while crude climbed to $63.14, the highest level in almost three weeks amid opposing supply-and-demand signals.

The Trump administration hasn’t ruled out increasing the gas tax to help finance a $2 trillion infrastructure plan, but the idea has little support among officials who are wary of a politically risky move heading into the 2020 election.

The busiest U.S. fuel pipeline is running below capacity, as Gulf Coast refiners get fatter margins exporting to Latin America than shipping to New York.

Oil rose after a government report showed shrinking U.S. gasoline supplies, suggesting more demand ahead for crude as tensions flare in the Middle East.

You can build a better mousetrap, and the world will beat a path to your door, Ralph Waldo Emerson noted in the late 19th century. More than 100 years later, Ryan Walsh is building a better mailbox so the world’s goods can be delivered to your door.

Plodding down DeKalb Avenue in Brooklyn is a bus moving under the power of an eerily quiet motor. It looks newer than most buses on the route, with a vivid digital display facing the driver and doors that part with a futuristic pneumatic swoosh. Commuters trundling aboard at rush hour don’t seem to realize this is one of the few electric buses—300 last year, to be exact—in America.

The U.S. average retail price of diesel fell 1.1 cents to $3.160 a gallon. Oil prices slipped to $61 a barrel as the United States and China imposed higher tariffs on the other’s goods, which chilled the outlook for demand.