<http://schema.org/url>
<http://blogs.wsj.com/environmentalcapital/2009/04/29/green-ink-car-wars-cap-and-evade-and-black-carbon/>
<http://blogs.wsj.com/environmentalcapital/2009/04/29/green-ink-car-wars-cap-and-evade-and-black-carbon/>