It is 9 pm and actor Madhavan has had interviews lined up all day since he landed in Chennai, but he is thrilled to talk about the vision behind his film Rocketry: The Nambi Effect coming to life. From the Cannes Film Festival and a 15-day US tour including a Times Square premiere of the film’s trailer, to media interactions and events in south Indian states, the popular actor has left no stone unturned to promote Rocketry, which marks his directorial debut.