Kolkata got a whopping gift of a new mass rapid transport system just the day before Valentine&rsquos Day with the launch of the first phase of the East West Metro line. The service has been opened for the public from February 14. Trains run along an elevated route of almost 5 km between Vivekananda Yuba Bharati Krirangan (Salt Lake Stadium) and the IT and business hub Salt Lake Sector V, on the eastern fringe of the city.