Pigeon Transit was a transit app that used crowdsourced information about delays, crowded trains, escalator outages, live entertainment, dirty or unsafe conditions. Launched September 1, 2018; shut down June 24, 2020 — it lived 1 year. One of 25 Google products killed in 2020. https://www.slashgear.com/pigeon-crowdsourced-transit-app-experiment-is-shutting-down-11624401/ Data: Killed by Google (killedbygoogle.com, MIT).