The pneumatic tube mail system in New York City
Similar to the Alameda burrito tunnel that sends fresh Mission burritos to NYC: <a href="https://idlewords.com/2007/04/the_alameda_weehawken_burrito_tunnel.htm" rel="nofollow noreferrer">https://idlewords.com/2007/04/the_alameda_weehawken_burrito_...</a>