At the end of the movie, ShahRukh Khan gives a tribute to Superstar Rajnikanth. Satyaraj who plays Meena's father, starred opposite Rajnikanth in the Tamil movie Mr. Bharath (1986), which was a remake of the Hindi movie Trishul (1978) which starred Amitabh Bachchan.
Just before getting down from the train to Deepika's village (Khamman) Sharhrukh and Deepika are shown in Sleeper Class (SL) Coach.
When they get down, they get down from General (II) Class coach.
In India General coach are not joint thus there is no way you can go from one coach to other.
Is Chennai Express highest grossing Bollywood movie ever, the top performer in India ??
Yes Chennai Express is the all time blockbuster Indian movie. As of August 2013, it has broken the following records in India
1. Highest Paid Preview
2. Biggest first day collections ever
3. Highest second day collections ever
4. Highest third day collections ever
5. Highest opening week ever
6. Fastest to 100 crore INR club ever
7. Highest week 1 collections
8. Fastest to 150 crore INR mark
9. Biggest grosser of 2013
10. Fastest to 200 crore INR clubAs per box office, it has been already termed the highest grosser in Bollywood.