Why would this work, and if this works... why would anyone pay for Uber rides, if this is a way to bypass paying for this service? I guess this is one of those services that will only work in the USA, like
the Coupons system they use there. I tried the Couponing in my country and I got "zero" free lunches.

You should rather find out, where this service will accept referral rewards and offer that to the
members. Was there anyone, who tested this?
This works everywhere because uber referral system works everywhere.I have sold these to people living in US,Singapore,India and they can use it.Can u pls say which country do u belong to?I didn't understand ur question about paying for uber rides.But this is a way to bypass paying for uber rides.For reviews pls check the hero member vouch which was carried in the uk.