[PapaBear3625]

Might not be a terrible idea, for any sea level east coast FReepers to keep at least enough gas in their car to get a hundred miles away from the coast on short notice, when everyone else is also trying to do the same.

Anybody in Florida might do better to get to the roof of a sturdily-built apartment building than try to get to anything that looks like "high ground" in Florida, when everybody else is trying the same. A quick look at Google Earth shows that almost all of the Florida peninsula is under 100 feet in elevation, with at least half of Florida seeming to be under 50 feet.

General evacuation tip: Have a good state-level map in your car, along with a GPS, and avoid highways at all costs. As Katrina showed, highways quickly turn into slow-moving parking lots. If there's a street route to where you're going, use streets and minor roads rather than highways.

[Travis McGee]

Please see my 38, and the post by lonesome in Mass a bit after 38.

Please, set this worry aside.

[Quix]

Check out the devastating tsunami from Japan all the way across the larger Pacific hitting the West Coast many years ago.

I think your assumptions are flawed as that example dramatically illustrates.