Who says South India does not have Gatimaan. It is called Vaigai Express. - Thamizh Maran

Railways know that from which route they will get maximum revenue.There is more potential for revenue in cstm karmali(goa) route than Delhi Ambala Chandigarh route. Even shatabdis r not running jampack on Chandigarh Ambala Delhi route.Then how can we expect good response for tejas.
The reason is that Volvo buses r running round the clock by hr/pb and himachal roadways.So people r prefering Volvo as compared to trains for delhi

---