Christmas ad 2016 for H&M.
There is an 'UNNACOMPANIED MINOR' sign in the child's cabin reminiscent of the one Christofferson wears in Wes Anderson's first animated feature Fantastic Mr Fox.
One of the passengers on the train is reading a book by Agatha Christie. Agatha Christie wrote Murder On The Orient Express which is a murder mystery that takes place on a train.
The name on the train that features in the short film is "H & M Lines Winterexpress" which is a reference to the name of the clothing company (H & M) the advertisement was shot for.