See also: the New York pneumatic mail system (although that didn't move people). http://untappedcities.com/2013/03/15/nycs-pneumatic-tube-mail-network/ http://u

See also: the New York pneumatic mail system (although that didn't move people). http://untappedcities.com/2013/03/15/nycs-pneumatic-tube-mail-network/ http://untappedcities.com/2013/03/15/nycs-pneumatic-tube-mai... (not to be confused with Beach Pneumatic Transit, although that didn't move mail: http://www.columbia.edu/~brennan/beach/ http://www.columbia.edu/~brennan/beach/ )