<http://schema.org/about>
"The idea of using flywheels as energy storage medium has been around for a while; this gyrobus tooled around Switzerland in the early 50's. In the 80's volvo played with a sort of hybrid, with a small diesel engine charging the flywheel. The big flat"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/renewable-energy/flywheels-coming-online-for-power-storage.html>