If you want to be sure you get it in the door, make sure it looks nothing like a bicycle. Get the dahon bag and use it - it will just look like a (somewhat lumpy) canvas suitcase. plus, if it gets grimy, you won't be sliming up others in the elevator. just don't ask to do it or mention it unless pressed - and even then say it's bike parts for reasearch or something. a guy in my office uses one without hassle and the security is really tight -- they are fascists about regular bikes. and don't lock it up outside. it will eventually get gone.

[btw, I am not stalking your posts, just bored today.]