youtube video : Purvanchal Express , hmmm !!! This looks like a good n fast train from Calcutta towards North bihar & Eastern Uttar Pradesh . I think a "Superfast" train is required from Calcutta (HWH/SDAH/KOAA) for those North Eastern Railway area cities . Even in this train , only 2 AC Coaches in this 22 Coacher ? Bahut nainsaafi hai , thakur !! Thanks .