i'm very conscious of how often they're looking at their phones, and they've got a map sitting in their lap. The ober drivers, even more than taxi drivers, always seem to be attached to their phone. And i think mobile phones are very dangerous incurse. They 're like factory installed eye phones that run uber and nothing else. Which is why, in london, almost all the drivers have, hilariously, at least two and sometimes three phones attached to their dashboard.