poll what is something you are ambitious about?
control arm bushings? a front end shop will check for free. they're slightly expensive to replace.
It is non conducting and prevents combustion by removing the oxygen present in the air. It is relatively cheap and easy to administer. It can be activated automatically but it can choke you if you are in an enclosed space when activation occurs. Areas where it is used have a means of shutting the system off whilst work is carried out.
Because CO2 is as combusted as it will ever be. It cannot continue to burn in any way. Also, it can be stored easily and can expand to high multiples of its initial volume. It is denser than surrounding air, and can sink, pushing the air supply for the fire out of the waythus suffocating it. It also doesn't conduct electricity, unlike water which is also used to put out fires.
