In addition to this car, I watched a really nice Camaro (I know) on youtube burn to the ground because the only extinguishers that track had were filled with....... WATER!!

I've never had an extinguisher in my car, so shame on me, I've been lucky and probably got away with something.

However.... If not properly mounted (and even if they are) extinguishers can become lethal projectiles inside a car during a crash or rollover. In Roger Burgess's pro mod crash, BOTH his fire bottles went shooting down the track and in the grass upon the cars impact, obviously not helping at that point.

Point is, even if it's a good idea to have fire bottles in the car, it's inexcusable for a track to not be prepared for such a common occurance. And parking an unmanned, inoperable "safety" truck at the top end for appearence is just low rent.