I am thinking of Using War of the Worlds by Stephen Spielberg, that's a deffinate, but I keep thinking of using the novel Eragon by Christopher Paolini. I am trying to find a text that is not a film, and can be studied in at most a day.
Just posting this may be helping me already tho.
I would write something that feels original, that you have never seen before, but do not go off the tangent so that it has absolutely nothing about journeys.
You can write the best story and not get a good mark as there is nothing to do with journeys, but write something that isn't that good...