And Ritch Ames made a video of what that'd sound like.
A picture of growth across space and time.
Transport for London is working on a plan to replace its ticket offices with pick-up points for online shopping.
"Mind the Gap" takes advantage of open data to present a rotating, zoomable, ambient-noise-inflected model of London's train system.
The intricate patterns of rail yards.
Carl Downer spends his work days giving commuters Rasta-inflected pep talks.
See how the Underground map has changed through the years.