I dunno, in a way, the van emphasises the reflecitive expression on the face, telling more of the story. I mean , if she can be so absorbed in her inner world, even with traffic so close....
The thing I love about your candid photos are that you can make up a story of your own. I'm thinking that men are going to jump out of the white van and intercept the woman who's really an assassin. (I probably watch too many movies)
To me the van is symbolic of what she is dreaming about, and hopefully getting away from ! The green cast give it a strange other-world atmosphere which adds to the story.