Alternatively, the user might have confused the terms. Maybe "Venkatadri Express" is part of a movie titled "I Bomma," or the song is used in a scene set on the train. I should check if there's any such reference. Let me look up if the movie "I Bomma" includes a scene with the Venkatadri Express train. Alternatively, maybe a music video based on "I Bomma" was shot on the train. Or perhaps the song became popular among travelers on the Venkatadri Express, leading to some anecdotal connection.