This is an animation visualizing the movement and activities (differentiated by nine colors in the legend) of the surveyed individuals in the Chicago metropolitan area for an average weekday in 2008.  Data source: Chicago Travel Tracker Household Travel Inventory (2008).
Reference: Jiang, S., J. Ferreira, and M. González. 2012. Clustering Daily Patterns of Human Activities in the City. Data Mining and Knowledge Discovery.  Volume 25, Number 3, Pages 478-510