I have heard about this train before few months. Testing was going on and now i think it will be used regularly.
I have never heard double decker train in Foreign countries. It Is possible that in the World, this is first kind.
But there is also some problems with this one there must be lot of changes in the tracks.
I didn't hear about doubledecker train till today. After reading this post i came to know about it. In hyd they are no double Decker trains i think so :)
