From Weather.Com:
Some electric vehicles (EVs) in Florida are catching fire after coming into contact with salt water from flooding. The salt water acts as a conductor, causing short circuits in the battery and other electrical components, leading to fires. The risk persists for up to four weeks after a storm.
Florida fire officials advise moving any saltwater-exposed EVs out of garages immediately and note that electric scooters and golf carts are also at risk.
Extinguishing EV fires is challenging due to the battery packs being encased in metal and located at the bottom of the vehicle, sometimes requiring tens of thousands of gallons of water and extended firefighting efforts.
Federal guidelines recommend moving flooded EVs at least 50 feet away from buildings and other combustibles.