<http://schema.org/about>
"How great would it be if you could just swap out the wheels on your pedal-powered bike and - Voila! - it's an electric bike? Well, you might not have to wait too long for that to be a reality.MIT"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/greenwheel-wants-to-make-going-electric-easy-for-bikes.html>