Yes, a shady car service that in many cases does not have a price before hand, that does not take credit cards, that always tells you it will be there in 5 minutes (even if you'll be waiting 30+ minutes).
Their location is few blocks away from us, so you need to do research to make sure that the car service is around you.
Car service cabs are plentiful and cheap in my area. Many of the drivers directly communicate with you by phone and have GPS.