I have another friend who had her baby in her car in the Holland Tunnel. (It was something to do with bad traffic and alternate side parking rules.)
But this is more-- public. Especially as a news crew happened by, before the ambulance came. I do think the doormen should get tipped well for this!
It seems everyone is well. Babies are tough little critters.
I think the lesson here is that when a multipara says 'Now' she knows what she is talking about.