Mark Evans has used the Google Maps API to create a hypnotic visualization of commuting flows, showing the distances and 'journeys' that American's make to and from work.
Using the ACS Commute Map you can zoom in on any U.S. county and view an animated map showing where people live and work. The maps don't show the actual journeys that commuters make but do give a great sense of how town and city centers suck in commuters from surrounding suburbs.
The data for the maps comes from the American Community Survey. You can learn more about how the map was made from this data on Mark's blog post ACS Commuter Data Visualizations. Mark's ACS Commute Map was originally inspired by Alasdair Rae's mapped visualizations of commuting in the Bay Area.
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