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" If you&amp;#039;ve got a talent, might as well run with it, especially if your talent is absurdly specific and cool. Aliaksei Zholner&amp;#039;s talent, for instance, is making tiny functional engines out of paper, and after tackling a V8 and a V8 with a throttle, he&amp;#039;s on to the rotary approach.\u00A0 Despite having some unique differences from and advantages over piston-centric designs, pistonless rotary engines like this one have generally fallen by the wayside when it comes to practical use, mostly because they offer less-than-stellar gas mileage\u2014which is bad enough on its own\u00A0and worse in the face of tightening EPA restrictions.\u00A0 But this engine is made out of paper (save for a transparent cover just so that you can see inside) and runs on air, so no biggie.\u00A0         Source:\u00A0Aliaksei Zholner "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/technology/gadgets/a19653/tiny-functional-rotary-engine-made-of-paper/>