Preaching to the choir here but if any of you get the chance to watch (and friends and family) "The woman who stops traffic" do so as it's an excellent insight in just how much of a death grip the average motorist has on their steering wheel.
Basically, it's a about a conflict resolution/management consultant who is asked to try and un-jam three completely grid locked towns. Very interesting and a little frustrating to watch (Lots of "I'd drive less if there was less traffic" comments ).
The TV program is available free online here - http://www.channel4.com/4od/index.html
edit: Doh! the real title is "the woman who stops traffic"