The 82 Most Fuel Efficient Vehicles in the USA

It’s not shocking to discover that the top 5 most fuel-efficient vehicles in the USA are hybrids, in fact it’s good to see that they are leading the pack. Recently, a blogger went to the Environmental Protection Agency’s website and created a handy list that orders the cars based on fuel-efficiency.

Ranking Category Vehicle City Highway Combined
1 family sedan Toyota Prius 4 cyl, 1.5 L, Automatic (CVT), HEV, Regular 48 45 46.7
2 small car Honda Civic Hybrid 4 cyl, 1.3 L, Automatic (CVT), HEV, Regular 40 45 42.3
3 family sedan Nissan Altima Hybrid 4 cyl, 2.5 L, Automatic (CVT), HEV, Regular 35 33 34.1
4 family sedan Toyota Camry Hybrid 4 cyl, 2.4 L, Automatic (CVT), HEV, Regular 33 34 33.5
5 SUV Mercury Mariner Hybrid FWD 4 cyl, 2.3 L, Automatic (CVT), Regular 34 30 32.2

More Efficient Jet Travel

Princeton University is looking into the details of using biofuels in jet airplanes. The research team will examine what fuel mixture provides the best efficiency and how engines can be designed to better burn the fuels that they are bound to create.

Alternative energy sources, if designed appropriately, also could significantly reduce the amount of greenhouse gasses released in creating and burning jet fuel. According to the U.S. Department of Transportation, aviation is responsible for around 10 percent of the greenhouse gas emissions from transportation in the nation, or roughly 2.7 percent of the country’s total greenhouse gas emissions. The second research program, supported by NetJets, augments Dryer’s fundamental MURI work and brings in additional expertise from the Princeton Environmental Institute to develop “greener” alternative fuels.

Old World Ways for New World Bays

boat I have to admit that whenever I read about “new” ideas that are really improved old ideas that we forgot in this modern age I can’t help but think there is a wealth of historical knowledge we have yet to improve upon. We are learning from the past and combining it with the future though! Take for example the ingenious idea of using a sail on a boat, or a “new” approach to gathering energy (wind). Indeed these new approaches do improve on the original idea and do so while being cheaper than the current finite resource-based approach to energy. They also tend to combine different sources of renewable energy.

A true triumphant of old world techniques like sailing and new technology is floating on the coast of Australia. A boat that has sails that also function as solar panels.

The concept is the brainchild of Robert Dane, an Australian doctor from the small fishing town of Ulladulla in New South Wales. A keen sailor and rower, Dane was watching a solar-powered boat race in Canberra in 1996 and noted that the winning boat used a solar panel inclined towards the sun. The only problem was that as the wind grew stronger the panel became a hazard and had to be pulled down.

“It intrigued me, and I started wondering how one could combine sun and wind to power a modern, seaworthy boat,” Dane says. “And then one day six months later, I woke up one morning and realized that I could use a wing sail that was at the same time a solar collector.

Google Investing in Green Companies is looking to fund a lot of companies that are looking to improve cars to run off of electrifying technologies. Google sees a lot of promise in getting people to use plug-in cars because it would greatly reduce energy consumption in the USA.

Today, has issued a request for investment proposals (RFP) to the tune of $10 million in order to advance sustainable transportation solutions. We are inviting entrepreneurs and companies to show us their best ideas on how they can contribute to this important cause. We need catalytic investments to support technologies, products and services that are critical to accelerating plug-in vehicle commercialization. That is why we have structured this RFP to offer investment dollars to for-profit companies to promote social and environmental change.

This initiative continues Google’s adventure into trying to be super-green.

Solar Plane Soars Into Record Book

A solar plane that flew without a human to control it stayed aloft for 54 hours. That’s right a plane that relies on energy from the sun continued to operate overnight. The plane, the QinetiQ’s Zephyr, broke the previous record for a solar plane staying the air.

The Zephyr, developed by UK based QinetiQ, is a lightweight unmmaned aircraft which uses a combination of a solar array and batteries to power its flights. The plane weights a relatively low 31kg and has a wingspan of about 16 metres. The total flight lasted for a total of 54 hours, which, if you do the math, is a very impressive number for a solar powered vehicle. The Zephyr went for two straight nights without stopping or refueling relying on its solar powered batteries for flying. It made it all the way up to 18,000 meters (58,000 ft).

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