One can't see Rajkumar Hirani around these days. While the fans and followers of the director might be worried and surprised on this because his last released movie 'PK' has broken all records of Box Office collections amassing Rs 340 cr nationally and this surely calls for celebrations, the director is busy celebrating the success of his film by working on the script of his upcoming next. Reportedly, it was getting very difficult for Rajkumar Hirani in Mumbai to disconnect and go into the writing mode as people were constantly visiting and congratulating him for the huge success of 'PK'. Hence, the devoted director took off to the United States of America to gain some focus on developing the script of Sanjay Dutt's biopic. [related-post] Rajkumar Hirani has spent a lot of time with Sanjay Dutt and has come up with an apt cast and crew for the movie.. The director is expected to be back only by the end of next month and only then will the curtains will be taken off the movie's plot and the cast.