The concept of evacuating out of the path of something that is a few states in diameter is a concept I can't imagine either. Where would we go, if we were in Louisiana with three horses, a couple dogs, and not very much time?
Their choice is getting hit really hard, or just a little less hard.
I think you'd make choices you wouldn't want to make.
But if that thing hits New Orleans - it's below sea level, it's practically built on mud - getting out of the city has to be a good idea.
I'm very glad I don't live somewhere that gets hurricanes. My one friend is from New Orleans and his brother's a cop there - bet the cops don't get evacuated...