I was just sharing my experience and wasn't claiming that i know everything. And i have no idea on how OP is thinking or methods etc.
and while i do see your point regarding the O2/ NO2 mixture and the car being larger volume than a plastic bag, i would be more likely to agree with this if i didnt have a massive tank crank open in a carefully sealed environment.
So i do not know the math/differences between a small bag and just a little tiny flow of NO2 compared to roughly a 7' X 4' sealed box and a cranked open tank for more than 20 minutes, i would be curious to know that difference.
Now where i do see some possible wiggle room is if my NO2 was made for a different purpose, less potent...? But that would just be an assumption. Also need to point out that it is not the Nitrogen that kills you, therefore needing to get any CO2 to exit out of my car is not accurate. It all has to do with the body and cells slowly losing its supply of O2, so if i had several breaths of carbon dioxide would not have the effect you are presuming.
Again. I am not here to argue, or prove who has read more articles than the other. I came here to hopefully bring a light bulb to OP's mindset- if the car method was on the table, i wanted to share what he can likely expect.
Interesting read on Nitrogen executions.
Because no person has ever been executed by inhaling pure nitrogen, how the state will carry out a nitrogen hypoxia execution remains unclear.
www.montgomeryadvertiser.com
Not saying you are right or i am right, just that there is very conflicting information.