Yeah, I've sometimes wondered about the logistics of hyperinflated currency. If the money isn't worth the paper it's printed on, then where do they get the money to buy the paper it's printed on?
Think about it. Printing money is fairly expensive. You need special paper, special ink, special printing presses, trained labor, distribution, and a whole lot else. Yet the final product isn't worth anything. You print a new stack of currency, but it isn't valuable enough to buy the supplies you'll need to print the next stack of currency. Wouldn't you expect the government to eventually lose the race, to fall behind its own inflated currency, and find itself unable to afford the costs of printing new money? And at that point, wouldn't the printing, and thus the inflation, cease?
Burning currency for heat may be cheaper than burning wood, but surely there are more resources expended to produce currency than to produce firewood. How can it be that the currency is worth less?
