Help N2 gas tank options

[devils~advocate]

The main issue is oxygen not being fully displaced.. CO2 is not an issue in such a big space, if it were fully rid of oxygen. Otherwise you would feel like suffocating while sitting in the car normally

yes, meant to say O2. Smaller volumes you'd want to displace both co2 and o2.

 

[h4ppyhypoxia]

i mean this method is rated 8/10 for reliability and 7/10 for peacefulness according to pph but thats the eb way and it assumes you have the right setup its prbably one of the harder methods to prepare

Are you truly sure there isn't any other way besides ctb? It would be a very big risk to attempt like this (and attempting in general)