I think that film is full of metaphors whether the director has an aim like that. Mainly, I got the idea of "interventionism to private life". What if some people intervene to your life? Or what if "the state" intervenes your life? I felt a referral to "Big Brother" issue too! Also film lights the way for environmentalism issues. Another issue is "resistance to change". It shows what happens if you resist to change. Feelings of stay-cation and isolation results in craziness. Isabelle Huppert is again at the top of her role playing skills.There is an approach to unknown. None of us had thought living at the edge of a motorway but there are real people living like this. The film's strength is here I think. It shows us something that we see nearly everyday but did not touch or feel even once.