I admit I wondered WTF when it was announced. Obviously I was not thinking of Natural Disasters.
But it actually works and has a legitimate use based on reports of owners in California
When Elon Musk initially talked about the Model X’s “Bioweapon Defense Mode,” the company’s skeptics dismissed the feature as a simple gimmick. For owners of the company’s electric cars currently affected by the raging wildfires in CA, though, Bioweapon Defense Mode has become a welcome blessing, allowing them and their passengers to breathe clean air despite the worsening air quality outside.
https://www.teslarati.com/elon-musk-...wildfires/amp/