High Quality Content by WIKIPEDIA articles! The Atlantic Greyhound Lines (called also Atlantic or AGL), a highway-coach carrier, was a Greyhound regional operating company, based in Charleston, West Virginia, USA, from 1931 until 1960, when it became merged with the Southeastern Greyhound Lines (called also Southeastern, SEG, SEGL, or the SEG Lines), a neighboring operating company, thus forming the Southern Division of The Greyhound Corporation (the parent Greyhound firm), which division became called also the Southern Greyhound Lines (GL).