Race cars need fully plumbed-in systems with a switch outside and a switch inside the car that can be reached from the driving position.
The little deodorant bottle ones are pretty much useless. they can put out something small, under the bonnet, when you are out of the car already, but they won't buy you any time.
what's quicker/safer:
unclick seatbelt, open door, get out
or:
undo seat belt, rummage around under seat on the opposite site of the car, undo latch (if it hasn't already and rolled under the seat - check where yours is in the jeeb, mashton!), work out how to pull the pin out, read instructions, spray on fire, open door, get out
Race cars need fully plumbed-in systems with a switch outside and a switch inside the car that can be reached from the driving position.
The little deodorant bottle ones are pretty much useless. they can put out something small, under the bonnet, when you are out of the car already, but they won't buy you any time.
what's quicker/safer:
unclick seatbelt, open door, get out
or:
undo seat belt, rummage around under seat on the opposite site of the car, undo latch (if it hasn't already and rolled under the seat - check where yours is in the jeeb, mashton!), work out how to pull the pin out, read instructions, spray on fire, open door, get out
that said, i'd still have one in a classic car.