A suburban taxi company may operate under several different names serving several adjacent towns. They often provide different phone numbers for each fleet, but they usually all ring into a central dispatch office. 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.