PR gets overtaken by SF justified. A drnt gets overtaken by SF hahahahahaha and people highlight PR are PR to fir bhi SF hai or 4 halts hain HD to Rajdhani class ki train hai 120 MPS hai non stop hai fir bhi SK ne NCR k har station ka paani pilaya kabhi sirathu, kabhi vindhyachal kabhi kahi pe kabhi or kahi pe hahahhaha lekin highlight me PR which shows the class of PR enough said...