This in from an Intertubes correspondent...WWL radio is streaming coverage of Hurricane Gustav. Very interesting, especially the phone calls from folks in the evacuation stream. Every potential problem of a mass evacuation ever discussed on preparedness boards--traffic jams, no gas and so on--is getting told by these folks.
Take away: If you're going to evacuate, do it before the masses decide to leave.
In a related thought, for those of you who subscribe to Rawles's "Golden Horde" theory, I don't think the Horde will be driving. From the sounds of things, if this was a real societal breakdown--no police, no tow trucks and so on--the roads would be completely impassible by now. The Golden Horde would have to travel by foot. Given the average physical condition of most Americans these days, I don't think they're going to make it far.