h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Glancing over my message centre, I've noticed a couple threads left over from 2005 -- one birthday wish, a couple calls to arms for roleplay here and there ("here" being H2G2, "there" being elsewhere), and one which turned into an unofficial installment of Arfenhouse, which was yet another "something I was interested in and therefore threw it into my H2G2 adventures right and left without a moment's hesitation or consideration as to whether it was actually a good idea." Oh, and one from 2004, "Shag", which is in a class by itself because no one wanted to share it.

... oh, and the aforementioned Arfenhouse-esque thread contained a reference to a half-mile long, metal hallway with lights on the ceiling corners; moving towards it caused one to abruptly appear at the end. And I now have no idea whatsoever what it's supposed to be a reference to (or if I even just made it up).