<http://schema.org/about>
"Equipped with a power-assist electric motor, this vehicle allows those who prefer walking over biking to achieve speeds similar to that of a bike, but with less effort."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/bikes/japan-walking-bicycle-club-wbc-combines-walking-with-biking.html>