<http://schema.org/about>
"The Toyota Prius Plug-in has made it to #2 in US plug-in car sales for the first time ever. Some other top players have seen their sales drop, but the Prius Plug-in has also seen a 190% increase in sales compared to April 2013."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/cars/toyota-prius-plug-sales-increase-190-april-us.html>