The flammability of lithium batteries kind of freaks me out. I hope we get to non-flammable batteries soon. Imagine a future where every car in a dense parking garage is lithium BEV, and then one of them catches fire. As far as I know, these fires are extremely difficult to put out, requiring enormous amounts of water. What if the fire spreads to many other cars? I'm not sure if this fear is at all rational. Probably not.