A crucial link to the main Commonwealth Games venue of Jawaharlal Nehru Stadium, the Central Secretariat-Sarita Vihar corridor today rolled out to the public just hours before the inauguration of the sporting extravaganza.The 15-km corridor, which will facilitate the travel of people attending the opening ceremony of the Games, was inaugurated with much fanfare.A brand-new Standard Gauge train began its journey from the Central Secretariat station at 8 am.With this, the Delhi Metro's ambitious Phase-II has almost been completed except the Airport Express Line.