That's good of him. My mate left his wallet in a cab and was stuck without any ID. Took 2 hours of waiting and a lie about medication being in there to get it back. Without the lie they wanted him to do all this follow up stuff the next day with some lost property number.When you finish your ride, you get sent an email receipt outlining your trip, the cost, and who your driver was with a photo. However most people's concerns with it, or the taxi industry's concern with it, is that theres less regulation in terms of the drivers and their qualifications.
Having said that, I've never had any issues with it. It's always been clean cars, with very friendly drivers (not that cabbies aren't friendly), and its cheaper than the cabs in Melbourne especially at night. You are also able to get out as soon as your arrive and you don't have to worry about paying with cash or card as it is all done through the app.
I was going home one night with a few mates from a club with Uber and one of my friends ended up leaving his wallet in the car. The driver realised about 10 minutes later and came back straight away to give it back.
There would've been a huge chance of that wallet getting lost I reckon.
Uber should give the industry a wake up call.