Buenos Aires had an extensive street railway (tram) system with over  of track, which was dismantled during the 1960s after the advent of bus transportation, but surface rail transport has made a small comeback in some parts of the city. The PreMetro or Line E2 is a  light rail line that connects with Underground Line E at Plaza de los Virreyes station and runs to General Savio and Centro Cívico. It is operated by Metrovías. The official inauguration took place on 27 August 1987.