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The ongoing impeachment inquiry of President Donald Trump in the U.S. House of Representatives threatens to halt the legislative agenda for the rest of the year and possibly longer, but a comprehensive transportation policy bill is still on the table as the issue remains one of the few vestiges of bipartisanship on Capitol Hill.

Pennsylvania, the heart of the U.S. shale-gas boom and one of the biggest coal-producing states, is joining a carbon market.

If you have concerns about switching to biodiesel blends, hearing an experienced diesel technician’s opinion might help. After all, who knows diesel engines better? Read this white paper to hear from experienced techs on how well biodiesel performs for their fleets.

The Trump administration has agreed to a new plan for boosting renewable fuels and offsetting waivers exempting oil refineries from mandates to use them, according to three people familiar with the matter who asked for anonymity before a formal announcement.

Hyundai Motor Co. and Cummins Inc. said in a joint statement that they have agreed to evaluate opportunities to develop and commercialize electric and fuel cell powertrains.

The U.S. average retail price of diesel slipped 1.5 cents to $3.066 a gallon, the Department of Energy reported Sept. 30.

Total Transportation Services Inc., a Southern California drayage company, will replace its entire diesel trucking fleet with near-zero emission natural-gas trucks.

Petroleos Mexicanos’ head of crude oil trading Victor Briones and two other executives left the company amid a conflict over an external review of the nation’s crude price formulas, people familiar with the matter said.

Bollinger Motors debuted its four-door, all-electric SUV and pickup trucks.