Hoses can’t extinguish these batteries once there’s a runaway fire. Protecting exposures is the only way. Unless like a few places in Europe they have containers with water they pick up the car and place them into.

The batteries can be extinguished but smothering agents can be placed Under the car on top of the packs to omit air.

Did a firefighting EV class a few months ago. Looking forward to my first one. Keep the fire to the car and babysit. Will be interesting for the first couple hours.