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Content: use HTML Edit Content <h1 style="text-align: center;">copenhagen wheel</h1> <h2>[WHAT]</h2> <ol> <li>] <span id="__w2_I1b6vm0_toggle_link"><span id="ld_xofqnl_101943"><span id="ld_xofqnl_101944"><span class="inline_editor_value">The Copenhagen Wheel is a bicycle wheel that stores and delivers electric energy to power a bicycle. Energy comes from an external battery charger, and from regenerative braking when the rider back-pedals as in a coaster brake. It is a Pedelec and includes a built-in electric motor and a 48-volt lithium ion battery and is controlled by a smartphone app. The motor analyses the topography and pedaling activity to decide whether to deliver power. Range is approximately 30 miles.</span></span></span></span></li> </ol> <h2>[WHY]</h2> <ol> <li>]&nbsp;</li> </ol> <h2>[WHERE]</h2> <ol> <li>]</li> </ol> <h2>[WHEN]</h2> <ol> <li>]</li> </ol> <h2>[EXAMPLE]</h2> <p><iframe src="http://www.youtube.com/embed/S10GMfG2NMY?feature=player_embedded" frameborder="0" width="640" height="360"></iframe></p> <h2>[HOW-TO]</h2> <ol> <li>]</li> </ol> <h2>[REFERENCE]</h2> <ol> <li>] Quora ? - What are the best new products or inventions most people dont know about?</li> <ol> <li>] <a href="http://www.quora.com/What-are-the-best-new-products-or-inventions-that-most-people-dont-know-about/answer/Saqib-Shamsi-1?__snids__=747861570&amp;__nsrc__=2" target="_blank">answer by Saub-Shamsi</a> - </li> </ol></ol> <h1 style="text-align: center;">&nbsp;</h1>