A treasury auction..
No, I don't use my Bitcoin to buy groceries, I also don't rip bricks out of my house or parts off my car to pay for groceries either, lol the shop wants fiat, what am I mean to do starve to prove a point?
Bitcoin is my store of value, Its the problem it solves for me, medium of exchange is handled by fiat and i am all too happy to get rid of fiat to acquire my groceries because time and fiat is a liablity, any fiat I don't need short term I'd convert into bitcoin