CNG expansion has slowed as gasoline prices dropped – Tulsa World

Tulsa WorldCNG expansion has slowed as gasoline prices droppedTulsa WorldA customer fills up his CNG pickup in 2015 at the TruStar station near 51st Street and Yale Avenue in Tulsa. Oklahoma has the highest number of CNG stations per capita in the U.S. MATT BARNARD/Tulsa World file. Matt Barnard. Sparq ground breaking

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