 They may have subsidiary taxi businesses holding medallions in each town.Taxi companies also may run multiple businesses, such as non-medallion car services, delivery services, and school buses, for additional revenue, as the infrastructure required for maintaining, operating and dispatching the fleet can be shared.Sometimes theme or entertainment based taxis, like Funkmaster V's Uptown Cabs of Renown or Karaoke Kab, are popular Taxi services in the United States.