Flying Wing Prototype - NASA X-48B

NASA’s “Flying Wing” Aircraft Prototype Twice as Efficient

While aviation engineers have long known that a “flying wing” aircraft would be more efficient than the traditional tubular fuselage aircraft we see today,...

HCCI Engine: No-Spark Gasoline Engine as Efficient as Diesel

If you ever had a diesel car, you know that it's more fuel efficient than the gasoline counterpart. That's because diesel engines use compression to ignite the fuel, and gasoline engines use a spark to do that. Practically, diesel engines could work without any electricity - at all.

OPOC: The Two-Stroke Engine Revived by Michigan Company Is Cleaner and More Efficient

EcoMotors, a Troy, Michigan startup company revitalizes the two-stroke engine, making it 50 percent more efficient than currently-used four-stroke engines and less polluting. Even Bill Gates and Khosla Ventures invested a total of $23.5 million in them.
KSPG's Electric Vehicle Range Extender, About as Quiet as the Spare Tire Cubby it Fits Into

New Electric Vehicle Range-Extender Allays Range-Jitters Quietly

Extended-range electric vehicles (EREV) such as the Chevy Volt and BMW i3, actually suffer from a noise problem. Range jitters are pretty close to the...
Ricardo HyBoost Could be the Future of Hybrids

Ricardo HyBoost, “The Future of Hybrids?”

Do we really need a “new kind of hybrid?” Perhaps we do, since most people complain about two things in current hybrid vehicle technology. First,...

Norwegian Airline Most Fuel Efficient, British Airways – the Least

British Airways and Lufthansa top the chart for the least fuel efficient carriers, contributing the most to carbon pollution from aviation. Air travel has quite...

Austrian Hypermiler Does Amazing 1242 Miles and 127.9 MPG In a Classic Diesel, Around...

It's not the Prius, it's not the Volt, it's not any hybrid car, but a turbocharged diesel one: a 1.2-liter Skoda Fabia. Austrian hypermiler Gerhard Plattner has just proved that an ordinary diesel car can go 2,000 kilometers (1,242.7 miles) with just one 45-liter fuel tank, reaching an astonishing 127.9 miles per gallon.
Audi A6 Avant has the Fuel Economy of a Toyota Matrix

Audi Boosts Fuel Economy by Deactivating Cylinders

As emissions regulations for the automobile industry continue to strengthen, automakers are looking for the best ways to reduce fuel economy without impacting performance. Audi's...
Green Car Technology in a Light Duty Pickup Truck

2014 Green Car Technology of the Year Award – The Green Optimistic Picks

January 22, on the second Policy Day at the 2014 Washington Auto Show, Green Car Journal will announce the winner of the 2014 Green...

Mazda Claims Its New Skyactiv-3 Engine Matches EV GHG emissions

Mazda is said to be working on a gasoline engine to be as environmentally efficient as electric cars.  Its latest high compression engine technology...