fire extinguisher

I have been a full time Fire Fighter for 30 years and have been to lots of car fires.
If you can open the hood right away do it, it helps to get the heat out of the engine
compartment and also helps to keep the fire from spreading to under the dash mostly
do to heat transfer. Although messy your best extinguisher is a ABC dry chem . Here in
Canada we can not use Halon by law and sorry to say the U.S. will soon be doing the same because of the affect it has on the ozone layer. Cutting the rad hose I think he got lucky by not getting scalded.

Kenny