OKLAHOMA CITY - Governor Mary Fallin is marking a green milestone for the state.
The governor is joining officials from onCue Express filling stations to celebrate compressed natural gas sales.
The 13 onCue stores in the state have sold the equivalent of $3 million in CNG fuel -- more than any other private fueling retailer in the state.
Oklahoma also has more CNG infrastructure per capita than any other state.
The celebration event is scheduled for 1:30 p.m. at one of the onCue stations in Oklahoma City.