Yes correct IR must try Tejas in Mumbai....Howrah-Tatanagar and Howrah-Puri both routes Tejas will be super flop...Howrah-Puri Shatabdi exp is already running with average occupancy . So giving another full AC train with flexi-fare will be a super flop. Similarly for Howrah- Tata route..running full AC train with flexi-fare will be Super flop as nobody will pay flexi-fare for 3.30 hrs journey as many other options are available