occupancy varies on various trains .if u consider G Mail than its full .. Karnavati also get good patronage. Adi DD majorly goes vacant with 300-400 seats
shatabdi 300-500 seats mostly goes vacant . lokshakti also gets good patronage..
Adi duronto also gets good response from last momenters.
as per this data there is no need of bullet...
more... train on mumabi Ahmedabad...
the main reason is this project requires vry large amount of investment . than for recovering that amount fare of bullt train would be high ... comparively similar to flight .