Sorry to hear that happened to you, Dan. On the other hand, it was good you had an extinguisher handy and were able to get it under control quick enough to avoid anymore damage.
Ever since I've owned my Stealth, I've kept two extinguishers in the car with me...Granted, they're the cheapo ones, but I think I'll look into getting a CO2-filled one to minimize any ill effects, should I ever need to use one (hopefully I never do, but you never know).