Bollywood actor Ranbir Kapoor, who had expressed his wish to make a short film on the life of his grandfather and legendary actor-filmmaker Raj Kapoor, has a new idea for a short film. Now, he plans to make it with the three Khans -- Salman Khan, Shah Rukh Khan and Aamir Khan. br br Encapsulating Raj Kapoor's life in a short film is next to impossible, therefore, Kapoor plans to make a short film on the three Khans of Bollywood - Shah Rukh, Salman and Aamir - where the three will sit together and simply talk. br br "After I said that (short film on Raj Kapoor), I began to think that a short film would be too small to tell about his life, it will take me 500 hours to do it,"the 31-year-old said on Tuesday. br br "But then I also began thinking on whom can I make a short film. Then I thought about an eight-minute short film where Shah Rukh Khan, Salman Khan and Aamir Khan are sitting on a couch and only talking," Ranbir said added.