From Flickr: “South of the Border Gas Station, Phillips 66; South Carolina at the N.C. S.C. Border” by 1950sUnlimited

Interstate S.C. 95; U.S. Highways 301 and 501,
Americas Most Beautiful Service Station! Pedros fantastic ’66 west station with 24 hour service, 2 minute car wash, All weather auto and highway service.

via Flickr http://flic.kr/p/twBJpb