App idea: Uber but all payments are made with Cashu, journeys are published in Nostr, and a review system based in Nostr. The driver could set a desired €/km and the user could make offers. Obviously it'd not work: - network effects - the regulator of each country will punish drivers (taxi cartel) - the mainstream don't use BTC already... But sounds not so difficult to implement, I'd be concerned about privacy because one would be publishing its routes on Nostr 😓