Sigh.
Washington Dulles Airport Will Spend $8 Million Each To Refurbish 60 Year Old People Movers - View from the Wing
Summary: Two mobile lounges will be refurbished at $16M total. If that goes well, they'll do the other 47. As a result, they expect to get another 20 years of operation out of these. Presumably this is cheaper than building out the AirTrain to Concourse D. (Yet somehow, less expensive to them than buying "off the shelf" tarmac-buses from Cobus?)