You mean like this:
http://www.filefarmer.com/stevengotz/videos/traffic.wmv
As suggested, just change the duration. Fun, isn't it? When I shot this, I knew it would be presented this way. SO I just let it run. 60 seconds of it is a lot, but if you watch the people instead of the cars and motorcycles, you will see some more interesting things. Mostly, I love the way the motorcycles all come to the front at each stop.
Steven
Adobe Premiere Pro 1.5.1 / After Effects 6.5 Pro
http://www.stevengotz.com
Learning Adobe Premiere Pro 1.5
http://www.lynda.com
Contributing Writer, PeachPit Press, Visual QuickPro Guide, Premiere Pro 1.5