Sorry in terms of population both indore and bhopal are much bigger than Rajkot. Surely rajkot is bigger than gwalior no doubt about it. BTW its only because of operational region rajdhani for chattisgarh goed to BSP and not terminates at Raipur as R does not have maintenance facility. On the other hand ADI has maintenance facility and is maintaing the rajdhani. May be rajkot can get a duronto to delhi