air bottle as compressor for cleaning cars?

[dave g]

was having a think about his a few weeks back and discussed it on another forum but thought i would ask here incase anyone else has done it,the more advice the better.

can you use a diving bottle/airtank/paintball tank etc to clean your cars with like we do with compressors with the nozzle on the end?

how big would you need it and what sort of regulator/nozzle on the end etc?

we have a diving shop in town where i could get bottle refilled but not sure on what i would need in the first place and the psi etc

there are plenty of tanks on ebay that are used for paintballing and powering beerkegs and diving bottles but i dont know whats needed.