Director Jean-Pierre Jeunet says:
I've always loved night trains and their magic: its the perfect opportunity to create an encounter in suspended time. I really liked the idea of a woman meeting a man. They both think about each other, but continue on with their own lives, left with the regret that they didnt make contact with the other person. I love to play with destiny and coincidences... I knew that the story would revolve around the mesmerizing effect of the scent in the womans wake. We had to give voice to the intangible.