As the name suggests, the train journey forms a pivotal part of the story. In the picture, SRK is seen doing a repeat of his famous scene from 'Dilwale Dulhania Le Jayenge' (DDLJ) only this time, it's Deepika and not Kajol and she seems to be walking slowly rather than running to catch the train. Moreover, while DDLJ's train sequence was shot in the EURAIL, it's the Indian Railways here that forms the backdrop of 'Chennai Express'. Also what's interesting is Deepika's look in the film which resembles that of a typical South Indian village belle.
Chennai Express is slated to release in 2013.