Eventually I managed to take up my WagonR to Rohtang. This was a nice trip from Kolkata, West Bengal up to Rohtang. The last 50 k.m. from Manali to Rohtang was a very tough drive, as practically there was no road at all. Due to land slides and avalanches a large part of the path was full of boulders. It was really a very good driving experience. Major point to be learned is the art of avoiding those large boulders cause they can easy damage such a small car with low ground clearance.. The suspension system of small cars of Maruti is not that good to take up the challenge unless you cautiously avoid those boulders. Most places were full of mud and water flowing across the road. So in these conditions the toughest part is to judge how deep is that trap. Anyway I enjoyed the driving most and obviously the beauty over there. I was advised by the local people not to try with a small car. Then I talked to the drivers of the Himachal Pradesh Tourism car drivers. They told me that judgment is the last word. So please be careful to take up your own small car. If you drive really well and have full confidence on you can go ahead.
Uploaded 2 photos of my car @ Rohtang.
This post is edited to create/provide link to the photo album.