40-50 an hour is a bit on the high side. If you're doing a back of the envelope guess based on what you're charged, keep in mind that there is a sampling bias; you're probably riding hours where other passengers are also making requests. Nonetheless, I would say 35-40 an hour is not unreasonable. There are of course probably lots of drivers who are exceptionally bad at finding rides (let's say 20-25 an hour) who are making less than that. Without tooting my own horn too much, let's just say that there are a lot of really stupid folkways that go around the driver community. There was literally one guy who once said (paraphrased), "I drive a circuit between these five points until I get a ride". Also, he drove a truck. I tried to point out to him why this was a bad idea, but he seemed resistant to the idea of changing his tactics.