With a card (from the list), cryptocurrency will be converted automatically when buying something.? (btc>coffe)
I know at this moment only one 2Gether.
Not all of them can "do" that.
Current Wirex doesn't, but afaik the "new one" they already advertise will do that too.
AdvCash doesn't do that.
Binance, on the other hand does that nicely.
So not all have such a feature, you have to read and ask around when you acquire a crypto card.
I guess that at some point in future all (or almost all) will do this, though.