Finally, Google has added real-time traffic to their maps.

http://maps.google.com/maps?layer=t&z=10&ll=41.883876,-87.632446

More info here: http://googleblog.blogspot.com/2007/02/stuck-in-traffic.html

Yes, Ionut, me and many others spotted that this morning

I love what looks like USA now :
http://maps.google.fr/maps?f=q&hl=fr&q=USA&sll=47.15984,2.988281&sspn=24.886083,82.265625&layer=t

I wonder if they'll take traffic congestion into account when giving driving directions.

Cool! (but I don't live in the USA)...
Is there any information what is the company providing this traffic information? I believe not NASA or NAVTEQ ;-)

Too bad this doesn't cover Australia.

By the way, I said finally because not only has Yahoo Maps had live traffic forever, but even Google Maps Mobile has had live traffic for a long time now. I wonder why it took so long to bring it to their web interface, since I would assume data is coming from the same source. Maybe since there are less users on the mobile interface, it was kind of a beta test for to make sure it was accurate?