Ed Tennyson, who collaborated with Laurence Aurbach and me on the Millennium Institute project, prepared a list of viable Urban Rail projects (@ $30/barrel oil) in the DC area. He had Columbia Pike on the list, but it went from the Pentagon/Crystal City to Tyson's Corner.

Best Hopes for Urban Rail,

Alan

I remember commenting on that. The Pentagon to Skyline segment will happen in the near term (This is the Columbia Pike Corridor). The Skyline to Seven Corners to Tysons expansion is little more than a glimmer in someone's eye at this point.