Add in the difficulty of finding gas anywhere in the evacuation zone, and it shows the sheer problem of too much reliance on cars to solve what was once a local/family/personal matter. Cars are nice I suppose if everything is running smoothly. Just don't have almost the whole population thinking the same thing-getting out in the same direction. The same with airports, bus stations, train stations (what is left of them), and goverment assistance. What's left? The old fashioned means of getting around-walking, animal powered vehicles, and cycling. It is still very strange that the more technologically advanced society becomes, the more we are forced to switched back to backward practices in order to survive.