I just watched the Space Shuttle landing here in California today via internet, and some of the after process. It was interesting to see that they use the People Movers (complete with 2 large pylons atop the roof) for (I presume) offloading of the crew. They called it the "crew transfer vehicle".
I still think these things just look weird, and I'm sure the one used for the Space Shuttle is much nicer than the IAD moon buggies.