I'm more of the 'let it burn' crowd also unless you are emotionally vested or own a classic. First off, most people buy a cheap dry chem ABC fire extinguisher from a big box store. Problem is they are extremely corrosive to aluminum and wiring connections, Once moisture gets to all that powder you will be sorry as the first inclination is to wash it off making matters worse than the fire in some cases. The very best is Halon for gas and typical automotive fires as it works fast and leaves no residue. It's hard to find any more (recycled gas only) and very expensive. Next best is straight CO2, works well, leaves no residue but again is much more expense than the box store dry chem offerings. If you ever do 'save' your car from a fire get ready to argue some serious diminished value issues with your insurance company. Salvage title from a fire or flood is just about the worst thing to see due to future electrical problems.
