London in a Minute: A Time-lapse of a Day's Commute

This animation shows what 3 million London commuters do every day on public transit—blue dots show people at home in the early morning, green dots show people on the train or bus, and red dots show people while they're at their destination of work, school, or whatever else they've gone to do. It's interesting to watch, and may be used by city planners to spot public transit issues that need to be fixed.