I don't remember the relevant names or half the details, unfortunately, but something does exist.
I think the messaging programme is sorta fediverse-like in terms of you can get an instant messaging app and then you pick like... "groups" like instances to join or smth and one of those was a rideshare thing where the driver and passenger would negotiate travel and fares directly first, and then pay in cash.
Think it was most used in russia and india or smth.
Sorry i really don't remember anything about it very well!
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