October 25, 2006Precisely timed blast of ethanol eliminates knocks in experimental engine that would add only $1,000 to cost of car.TAGS:engine, gas, car
April 9, 2007Diesel's not just for truckers anymore. Converting cars with notoriously bad mileage can make them eco-friendly without compromising performance.Photos: Muscle cars with a conscienceVideo: Souped-u...TAGS:biodiesel, Hummer, horsepower, car, engine, alternative energy, natural gas, mile, video
September 26, 2006Entrepreneur sees sports car prototype as fulfilling the need for speed and environmental responsibility, too. Photos: Speedy and sporty
Video: A spin in Wrightspeed X1TAGS:engine, car, efficiency, battery, video
August 2, 2007Zero's electric bike takes some getting used to. The benefits? Forty miles on a single charge and no stopping at the pumps.Photos: Motorbikes go greenTAGS:motorcycle, mile, battery, engine, car
April 16, 2007Gold. It's not just for teeth anymore. Nanostellar is going to use it to save automakers money and make diesel cars run cleaner.TAGS:converter, automobile company, material, car, metal, engine
September 6, 2006Operators of this "roadable aircraft" would drive it to the airport, unfold the wings and take off. Prototype due in 2008.
Images: Terrafugia's flying carTAGS:deposit, plane, airport, aircraft, flight simulator, engine, car