World's Most Fuel Efficient Engine
The only fuel this engine burns are a few calories...its only emission is a little sweat now and again. Not a hybrid...nothing to plug in...100% human powered. For short, urban distances, if you are a healthy adult, I see no reason why this is not only an option, but the first choice. To me it is way more satisfying than driving a mile or two in a motorized vehicle. The video clip is only 60 seconds long...I hope you find it inspiring.
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