We arrived at San Fransisco Airport and walked towards the taxi rank.We were approached by a taxi driver offering to take us to our hotel he did say he was a Uber driver ( I do not have an Uber account). I knew that the fare should be around $45. During the journey our driver was constantly on his mobile phone either texting or speaking to other drivers. Arriving at our hotel he charged us $95.
I my opinion don't use them, i certainly will never use them again.