Yes they are a good idea. But are are more than one class of fires and more than one class of extinguishers. Plus if not used properly they are of little use and may draw someone into a false sense of security. Your not going to discharge a extinguisher thru the fender well and put out an engine fire, the hood has to be opened. Open it wrong and get a blast in the face from the heat/flames. With the increase in the use of magnesium and it catch fire, you will never put it out and it reacts violently with the application of water. There are a multitude of different rate extinguishers, Class A ,ordinary combustibles, Class B flammable liquids, Class C electrical fires, Class D combustible metals. Most Fire Departments have classes for the public on extinguisher types and how to use them if your interested. Most fire victims die long before the flame every reaches them from breathing the by products of incomplete combustion and the super heated air they inhale. I can not tell you how many fire victims we rescued, took to the hospital and died within the next 72 hrs. They drowned in their own fluid from breathing super heated contaminated air. It is not worth your life! Cover it with good insurance and walk away. Live to build another Hot Rod!
