[ceejayoz]

Yes, the people who can buy multi-million dollar cars just to have them sit uselessly in a garage can also afford to buy properties that may be useless in a few decades. Others are buying up land in New Zealand on the belief it's relative isolation will protect them from societal collapse.

Insurers and the Pentagon seem to be treating it as a real threat, which is probably more indicative than the purchasing habits of people who tend to love rapidly depreciating status symbols.