I grew up watching these trains between Mumbai and Pune. Travel so many times. Have seen so many changes. Time moves so fast. WCMs / WCGs to at times diesel, selected times WAM4, the most trusted on these lines WCAMx to whom watching was a joy and interesting when they use to negotiate DC - AC - DC territories and now a new era begins with WAPs and that too HOG. Happy and bit sad too coz will miss those AC/DC locos.