VIA Metropolitan Transit (or simply VIA) is the mass transit agency serving San Antonio, Texas, USA. It began operation in 1978 as a successor to the San Antonio Transit System. In addition to the entire city of San Antonio, VIA serves many other Bexar County municipalities, including Alamo Heights, Balcones Heights, Castle Hills, China Grove, Converse, Elmendorf, Kirby, Leon Valley, Olmos Park, Shavano Park, St. Hedwig and Terrell Hills. It also serves unincorporated portions of the county, including Kings Point and Losoya. While VIA does not directly serve some Bexar County municipalities such as Hill Country Village, Hollywood Park, Live Oak, Selma, Schertz, Universal City and Windcrest, many of these suburbs are within driving proximity of outlying park and ride facilities. The majority of the system utilizes transit buses. VIA also provides Downtown San Antonio with a streetcar circular service utilized by office workers and tourists.