Thanks everybody who contributed this post, sorry for delay as the time is different.
I was told by some of my friends that while crossing Turkey they met with some kind of so called police force which were in reality robbers, but few of people told that they went with some hiaces, and reached safely.
I read from http://www.hospitalityclub.org some experiences from Pakistan to Iran, which did not seem to be pleasing.
What about if we make a carawan of few friends and then travel?
Which season will be best to travel?
Basically it is nice idea to travel Europe, and fly from Iran to Lahore or Karachi. I will check if Turkish airline and iranian airline provide this service.
What should I do with my car then? I do not know if it possible to sell there.
Regards