Whether compressed natural gas or liquified natural gas takes over in the transportation sector, Clean Energy Fuels (NASDAQ:CLNE) has you covered. It has been working closely with companies like General Electric (NYSE:GE) and the joint venture between Cummins (NYSE:CMI) and Wesport Innovations (NASDAQ:WPRT) to expand the availability and feasibility of this technology. Because of this, major corporations like United Parcel Service (NYSE:UPS) aren't the only ones able to take advantage. Check out the short clip below to find out why.

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This segment is from Tuesday's edition of "Digging for Value," in which sector analysts Joel South and Taylor Muckerman discuss energy and materials news with host Alison Southwick. The twice-weekly show can be viewed on Tuesdays and Thursdays. It can also be found on Twitter, along with our extended coverage of the energy and materials sectors @TMFEnergy.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.