Thanks for the advice all. I'm a little weary of spending a big chunk of change on one of the Halguard extinguishers since there seems to not be anyone that I've come into contact with that has actually used one on a fire. On top of that, I'm suspecting that in my case, the greatest fire threats in order would be:
a) General fire suppression- who knows when/where you'll need an extinguisher.
b) Putting out a fire on the side of the road (smokers- need I say more?)
c) Putting out someone else's vehicle fire in traffic (I see a car-b-que probably once or twice per year in city traffic).
d) Putting out a fire on someone else's vehicle on-trail.
e) Putting out a fire in/on my own vehicle.
So I think an ABC extinguisher would be the appropriate way to go for me.
The last one there, "e," would likely be either an electrical or flammable liquids fire, and my bet would be electrical over the liquids. I'm no expert, but it seems to me that many (if not most) of the vehicle fires out there start as electrical fires, then catch some grease/oil on fire. If this is the case, then I'm pretty sure that the majority of the electrical system would be shot (and need replacement) anyways, so the thought of putting down some corrosive dry chemical doesn't really worry me.
Any thoughts on this?
Also, if my truck had a medium to major fire, I'd be replacing it anyways. Heck, even if it was a small fire I'd probably replace it- one never knows what might be damaged by smoke/excess heat in a newer vehicle, and I'm not all that attached. Besides, I'd be surprised if an insurance company would not total a vehicle even in the case of a small fire. I think I've talked myself into an ABC dry chemical extinguisher here. Any recommendations on a rugged/robust 5 lb model?