I have looked into Uber, and am not comfortable with it. My DH actually feels very strongly and is against me and CP using them at all. A coworker of mine requested a female driver in December and was sent a male driver (she refused the ride and was left stranded for an hour).
Their "background" checks for their drivers are not thorough and do not include finger printing etc, which are required by the big taxi companies. They rely on "personal identifiers such as license numbers and SSN". According to one article I read, there is no way to ensure that these applicants are truly who they claim to be. They were sued in California last year for claiming to have "best available" background checks. Uber is working on improving this but I do not know if they have yet. There have been a handful of assaults by Uber drivers as well.
Just something to keep in mind. I haven't looked into Lyft.
* I like snacks with my cranberry *
* snakes on the other hand - off with their heads *