no no, I mean this roboteer was bemused by the fact that only 3 or so bottles were legal.
He laughed that he had to put in a 2 kg ali bottle, in place of a coke bottle, and as its in there it might as well be 750psi once you amke the investment.

as I say, its silly, but there are roboteers out there event now with steel bottles for sub300psi systems.