Mountain Empire Oil In Johnson City Has Sold All 92 Of Its Roadrunner Stores To The Parent Company Of Fas Mart. GPM Investments LLC, Based In Richmond Virginia, Signed An Agreement This Week To Acquire Mountain Empire Oil Company Incorporated. GPM Investments Has Pledged To Embrace Roadrunner’s Company Mission And Enhance The Customer Experience At All Of Its Locations. The Deal Will Make GPM Investments The Largest Privately Owned Company In The Convenience Store Industry With Over 11-Hundred Stores In 18 States.