Originally Posted by
Karl Robbers
Well, I can say that if one were to lose a full CO2 cylinder off the back of a truck on a Tasmanian winter's morning and said cylinder was to lose its valve and therefore its contents. The cylinder would still be frozen around 4 hours later. Don't ask me how I know this, um, I just do.:doh:
As to the inert gas in a station wagon, fairly sure that is an emphatic no due to their asphyxiant properties. We're not even allowed an aerosol can in the cab at work for this reason.