What's the problem with the new bills? I would imagine the cash feed on a vending machine would be modular and/or programmable, no? Last time they introduced a new coin over here, old machines were updated to support it quickly.
Wait till you see what tRuMp wants besides the peace prize Just like Sudam H did. People were trying to sell that shit, even to ME, while I was in active duty over there, as his regime was falling apart.