This is what I was thinking. I can't think of a scenario, with my current lifestyle, where I would be in a car where I'd be able to access a fire extinguisher and deploy it faster than I'd be able to just get out of the car. Possibly, if I had a van, and three or four kids strapped into child safety seats deep in the back, but I think I'd still probably evacuate the crew before trying to put out the fire.