How old dose a car have to be to kill you in the old pipe in the window methered?

There can be a leak in a new car and in a unventilated car it will kill you. Deaths like that happen in the northern country, they have there car in a garage letting it warm up, the lack of oxygen kills them, you don't even know it is happening they say. You not thinking of killing yourself are you? Jesus prove to this person he or she does not and should not kill themselves or anybody else.