I know people all over that great commonwealth, and I have certain impressions of the accents in different areas. Tell me if you agree. In No. Va., they sound mid-atlantic but with a slower cadence. In the tidewater area they have a kind of aristocratic drawl, like Foghorn Leghorn. In the western part of the state they have a highland southern accent, more melodic and twangy. I'm generalizing of course, but there do seem to be distinct differences.
Down at the beach, the people all sound like the 'good ol' boy' onscreen politicians the article referred to. It almost sounds overdone a la Foghorn Leghorn, only they talk quick enough you know it's natural.
I haven't spent much time in the towns out west (only been hiking and camping with other Beltway-types), but when I meet someone from there I usually think they're from Kentucky or Tennessee at first listen.