Chicago real-time traffic graphs
Underscorebleach.net had a nice link to graphs of Chicago's traffic in real time throughout the day. Most sites just have the travel time for that particular time of day. But not only does this site have that, but they show the trend of the traffic throughout the entire day as well as the average time it takes. It's sweet.
Wanna know how long it's gonna take you to get somewhere in Chicago. You gotta use this site: www.gcmtravelstats.com.