<http://schema.org/about>
"If anyone still doubted that congestion charging can nudge a city toward greener forms of transportation, these maps by ITO World should dispel those doubts. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/maps-show-how-londons-congestion-pricing-impacted-drivers-and-cyclists.html>