Yes and no. Yes, Uber partners with existing licensed black cars services (or their drivers, not sure of the exact mechanics), yes, X is controversial in its ow

Yes and no. Yes, Uber partners with existing licensed black cars services (or their drivers, not sure of the exact mechanics), yes, X is controversial in its own regard (and Pop even more so) - but: some of the controversy is around how Uber makes black cars behave more like cabs - as in, you can almost-hail them on the street, rather than properly pre-booking them. I think I read that in Germany, black cars have to return to their base between each fare, specifically to avoid this (I also recall reading that Uber complies with this, don't know how that works).