From Amy Gardner's story in the Washington Post:
Scott A. Monett, president of TysonsTunnel.org, said: "Obviously, we would like to see some leadership. Everybody says a tunnel is better, but nobody will stop this because they don't want to be the one who kills rail to Dulles. We're supposed to be getting the best deal we can get, but it doesn't appear that anybody has tried very hard."This is an example of a decision made for political expetiency and short-term gain which will have a long-term negative impact.
Dulles rail backers, meanwhile, say that although a tunnel would be preferable, the option was studied and discarded as too expensive years ago.
Reminds me of (a) a certain Houston-based company that sought short-term gain at the long-term viability of the company and (b) a certain region in Virginia that can't get it together and stop parochial bickering in order to create a decent region-wide mass transit system.