Cummins unveiled its B6.7 Propane engine for medium-duty fleet owners, which will be built on Cummins recently announced fuel-agnostic B-series platform and powered with propane Autogas, according to ...

There's plenty of noise being made about alternative-fuel vehicles these days, but gas-electric hybrids, hydrogen, and T. Boone Pickens's favorite, natural gas cars, are hogging the spotlight. Roush ...

With crude oil being a finite and mostly imported resource, the search is well and truly on these days for alternative fuels to serve our energy needs. While some take an environmentally zealous, ...