The drivers dont have more than any average driver... in fact they usually are just average everyday drivers. The pickup and payment is done entirely through the mobile app and now includes pictures of both drivers and riders.

I really would say it's far safer than a taxi. Someone planning on robbing someone probably wouldn't use a GPS capable device to first have the potential crime scene come to them with continuous tracking the whole time, only to steal what they could get from basically anyone on the street.