IAD international arrivals are unforgivably slow- it is a true miracle if you get from plane door to airport exit in under 45 minutes, even with global entry and no checked bags.

Part of the problem is that the arrival corridors are quite narrow, so traffic slows to a snail’s pace.

But the primary problem with the mobile lounges is that there are too few. As a result, on arriving there is a lengthy and unpleasant wait as they stuff them full. If they were to send each one off as soon as all seats were occupied and have another one ready to load, the whole process would be much less objectionable.