They list Herndon, Virginia as the #1 place in the Washington D.C. suburbs. Try commuting from there to downtown Washington D.C. Got four extra hours each day?
Even just driving to nearby jobs can be a nightmare around there.
Herndon?? That's a long way to go to be a 'suburb.' Silver Spring and Alexandria are suburbs. When I was growing up in DC, Herndon was the country. No way would I want that commute.
Herndon, VA to downtown DC.
Even on the "S" bus, which wandered all over the place, from the Metro to Herndon, four hours a day? Might take that long driving. When I lived in Herndon, it was rarely more than 45 minutes each way, especially with the Express buses, but then, that was some ten years ago. Maybe the Metro is much less reliable than it once was.
Now getting from Herndon to Dulles Airport, that was a tough commute. Or expensive. Sometimes it was tough AND expensive.