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The Halfbike is a tricycle, made in Bulgaria, designed to be ridden standing up in order to work muscles that are not used when riding a conventional bicycle. The front wheel is driven by pedals while the back wheels pivot, so the rider steers by leaning from side to side. In Lithuania, they are developing another unusual bicycle. It is called the Rubbee and offers riders the chance not to pedal at all! This lightweight electronic device can be attached to any bicycle in under a minute, and once it switched on, riders can let the engine do the work... READ MORE : http://www.euronews.com/2014/04/23/revolutions-in-bike-design euronews knowledge brings you a fresh mix of the world's most interesting know-hows, directly from space and sci-tech experts. Subscribe for your dose of space and sci-tech: http://eurone.ws/Y9QTy3 Made by euronews, the most watched news channel in Europe.