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What’s the Most Energy Efficient Form of Transportation

Prairie Eco-Thrifter

But due to the improving economy and chaos in the Middle East, the price of oil is quickly climbing back up. Will the summer of 2011 be a repeat of 2008? During the “great recession” when oil prices dipped, fuel efficiency took a backseat to other issues. Bicycling – 0.18 MJ (180 kJ).