Dulles Airport Air Train Shuttle - - 3
Dulles Airport (Washington DC) has recently completed a shuttle train system between the terminals. In some ways this is a huge improvement over the "rolling lounges" but in my opinion they made a huge mistake in the design. Specifically they built the station for the "C/D" concourse several hundred meters beyond the concourse so that it would be midway between the "C/D" concourse and a future concourse to be built later (if ever!). This forces everyone to walk a relatively long distance back to the concourse. Why not a second station for the new concourse? It just seems dumb.