Building underground tunnels for 30 second delivery times Posted by Mat_Sherman on Sunday September 20, 2020 @05:16PM from the share.transistor.fm dept. https://share.transistor.fm/s/feaa771d ( 1 comment | 3 points | on HN )
> Pneumatic tube mail in New York City
> https://en.wikipedia.org/wiki/Pneumatic_tube_mail_in_New_Yor...
> The pneumatic tube mail was a postal system operating in New York City from 1897 to 1953 using pneumatic tubes