Co2 inflators/pumps. what's hot what's snot.

yes my question too, surely

addie I've been thinking about the same thing. How many tyre inflations can a CO2 pump give you? And what are the ecological aspects like? Any ideas?
copious brass things 'ready to throw'
'no need for muscles and renewable energy, (yourself) just pop in a handy cartridge and fill the world with crap' cha ching!