I wasn't leaving. My concern was all the needy people who 'flooded-in' to my sphere of influence. People everywhere for days, stranded, out of gas, no food, water, etc.
Yep, those highways can bring tens of thousands of hungry, scared, desperate and possibly infected etc folks into your little shangrila in a hurry.
I guess in a tsunami, you would have no choice. But thinking about the bioterrorism or bird flu epidemic possibilities, the last thing I'd wanna do is run to a supermarket and have some 6 year old kid cough up something green on me!