Whether compressed natural gas or liquified natural gas takes over in the transportation sector, Clean Energy Fuels (CLNE 2.52%) has you covered. It has been working closely with companies like General Electric (GE -1.76%) and the joint venture between Cummins (CMI -1.40%) and Wesport Innovations (WPRT -0.51%) to expand the availability and feasibility of this technology. Because of this, major corporations like United Parcel Service (UPS -2.75%) 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.