 The Metropolitan soon decided that it would convert all of its lines to the conduit system, being less costly than cable traction.The Lenox Avenue Car House, a car house and power house, occupied the block bounded by Lenox Avenue, Seventh Avenue, and 146th and 147th Streets.A second route was soon added, from the end of the cable-operated Lexington Avenue Line at 105th Street north on Lexington Avenue, west on 116th Street, and north on Lenox Avenue.