microsoft introduced something similar last week called "clearflow," and now google has released its version of it within google maps.
source: http://googlesystem.blogspot.com/2008/04/google-maps-predicts-traffic-conditions.htmlGoogle Maps can now predict traffic information for any day of the week and time of the day, based on past conditions. By default, if you click on the Traffic button in a supported area from the US, Google Maps shows real-time traffic information.
There's also a traffic layer in Google Earth and Google Maps Mobile, but these applications don't include yet traffic prediction.





