i cant tell you how much i value a fire extinguisher, i was at spa in the early 2000's ( possibly late 90's) my memory has left me, i was crewing for pete bennet in bugster ( crewing being a loose terminology)
We were standing at the top of the pitlane wall where the end of the 8th mile is, a bug sponsored by udo becker ( or perhaps his own car) threw all of its internals out of bed and an engine fire ensued there was no extinguisher in the car and the driver watched as his car took fire , we ran to the garage to grab a fire extinguisher but the pit was almost down near the startline ( bottom of eau rouge) i was going to the nearest racers screaming for an extinguisher, by the time we'd got back the fire crew were on hand, however if the car had an extinguisher on board, less stuff would have got burnt, i never forget picking up hot bits of destroyed engine off the track.
every vw ive had since that day has always carried an extinguisher.