"The mini van was so tiny that a single person can barely take five steps in either direction.
As a joke, Rohit challenged John to spend a day in the van.
The next morning when the cast and crew got back to the location, John was sitting outside on his chair with his cup of coffee that he had made on his own," said a source.
Produced by Eros International, the film also stars Akshay Kumar, Deepika Padukone and Chitrangada Singh. It will release Nov 25.