Replacing 8 car with 20 car is too much addition of capacity at once nearly 3 times from 530 to 1450 seats and will go vacant. 8 car to 16 car is itself doubling capacity is also huge addition but ok as we don't have 12 car version in VB. For today Vskp SC has 110 seats vacant which may go further up after Vijayawada for 8 car 530 capacity being week day off season which I never expected.