Publicity photo of a first-generation Union Pacific GTEL locomotive and a circa-1923 electric auto in Fremont, Neb. The auto was owned by a local woman and the locomotive was on its way west to haul ...

Small, ultra-fast, primary and “afterburner” secondary combustion events promise to deliver brake thermal efficiency as high as 69 percent. A better mousetrap? Even now, as electrification seems ...

Give it wheels and a steering mechanism, and people will try to power it with anything they can. Visionary (and not-so-visionary) tinkerers and engineers have experimented with everything from steam ...