I used them getting from airport to my hotel for CES. Driver was helpful and courteous and made for an enjoyable ride despite the CES traffic. However I'm reviewing what happened the next day.
Little did I know I dropped my driver's license in the cab that night. It was found by a passenger the next day who got a message to me with the (new) driver's cell phone number. I called and despite the huge demand and crazy CES traffic she found time (I figure at least half an hour that she gave up) to meet me to get my license back. Huge shout out to driver Joanne C. for saving me tons of hassle.