<http://schema.org/about>
"With fuel prices being what they are, I shudder to think how much it would cost to fill one of those trucks up, and how much fuel it\u2019s actually going through"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/transportation/questions/which-is-more-efficient-for-freight-truck-or-train>