Murphy USA Inc.
A retailer of gasoline, diesel and convenience-store snacks and drinks, Murphy USA runs its kiosk-style stations largely in Walmart parking lots across the US, plus its larger Murphy Express stores. Born in 1996 as a retail arm of the Arkansas oil firm Murphy Oil, it was spun off as its own company in 2013. Its very first pump opened in a Sam's Club parking lot in Chattanooga, Tennessee.