"... ah, it burns, it burns!". Local firefighters posted about it, and even AutoBlog did a piece about it.
So, big takeaways here: one, people vastly overestimate how much their vehicle can tow. I have seen people in Tacomas and Colorados try to haul 8-10k+ pounds, and ruin their vehicle doing it. Yes, it says you can tow that much in the manual... but that's on flat, dry ground on a cold day.
Two, Tesla apparently has a "BAIL OUT" alert for when their vehicles begin to slide down hills or towards bodies of water (listen to the YouTube video, apparently the driver told people that the car was warning her to exit the vehicle the entire time it was rolling into the lake).
Lastly, these lithium fires cannot be good for the environment. Even more so when it's happening in bodies of water that people swim in, drink out of, and fish in.
It has some kind of sensor, smoke or temp on the batteries, so it alerts you about a minute before a battery fire starts. That was what the warning was. The driver bailed leaving the Tesla to slide down the ramp into the water as the fire began.