Bhai sochna and krne me difference hai.... ek to practically bhi complex hoga and efficient bhi nhi hai...aisa nhi hota ki aap kahin bhi loco change kr lo...
Jis loco ko change kroge uska kya kroge ....jo eloco khda hoga wo idle time me kya krega.... there are lots of factors.Many train run more than 300 km even if they have Electrified Section but lack of end to end electrified connectivity !