Seems like a lot to be expected to do when you are also trying to get the belts off, the HANS, the net and/or anything else it takes to get out of the car fast.

An on board system addresses the source of the fire, likely the engine area, and the drivers compartment with one quick punch of the button.

Lyle Barnett's fire is the one I think about when thinking about fire suppression.

If the results don't match the theory, change the theory.