When I was at NC State, I met an old doctor who had an accent kind of like that. I had a feeling it was some sort of "Old Raleigh accent of prestige." I've also heard people talk sort of like that in Georgia, where again I got a feeling it was linked to prestige.
His accent might not be spot-on, but I find it plausible.
His accent might not be spot-on, but I find it plausible.