Black car service is another name for hired or chauffeured car service.
It particularly is reflective of "Towncar"service or executive sedan service which is used in most major markets as an alternative to taxi or shared ride service. Typically, a client makes advanced reservations with a service, the car is professionally dispatched, shows before the designated time, a trained chauffeur is driving, JetBlack and the worries of getting from point A to point B are handled.