<http://schema.org/about>
"Students in Florida are riding on the first two hybrid plug-in school buses in the U.S. The buses use both a diesel engine and electric motor, and they plug into a  power socket at night to charge the batteries. The Manatee School District bought the"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/plug-in-hybrid-school-buses-introduced.html>