Add Yahoo as a preferred source to see more of our stories on Google. A hydrogen-powered heavy-duty truck -- the prototype H2Rescue -- has hit a new milestone, traveling more than 1,800 miles on a ...

Diesels are becoming increasingly rare, but they're still an important part of some American automaker lineups, and there are ...

Perdue Farms, in collaboration with the Maryland Soybean Board and Optimus Technologies, announced the deployment of six trucks powered by 100% soybean-derived biodiesel on Friday. Officials say the ...

If you've ever ridden a mountain bike, you'll know that the lower gears help you get up to speed more easily. Conversely, the higher gears help you go faster overall, maintaining that speed. It's the ...

It is clear that zero-emission transport is urgently needed to address the widespread air quality issues in many urban communities. This is especially true for diesel-powered heavy-duty vehicles (HDVs ...