I used to think the same about Jan Shatabdi Exp until they introduced BSBS-PNBE Janshatabdi and many more.. so may be abhi new Duronto introduce nahin ho rahi hai baad me kar bhi sakte hain.
Duronto is a good concept in my opinion..
Rajdhani jaisi facilities aur priority two major Cities ke bich.. i agree Duronto ka concept ruin jarur hua hai....
more... Two big cities ko connect karne wali Duronto bahut si small city tak extend ki gayi due to politics