Introducing Duronto express from Yesvantpur to Mumbai central, Via; GTL-KLBG-SUR-PUNE will be efficient. Because this line covers most of electric n double line section. There is a big demand for a train to Mumbai. Since all train from Bangalore to Mumbai takes 24hours, people prefer to travel in aeroplane and you may check, all flight to Mumbai will be full. Hence, if Mumbai duronto express is introduced, it will be worth enough. The train can cover a distance of 1110km in 17-18hours. And it should be introduced in such a way that, the train should reach destination (both ways) by morning 8.