Highway plays like the scenes were spliced together at random, far from the way Hollywood would usually build a blockbuster. It is more like a European art film that values characters and relationships more than plot, but it isn't quite that either. Oddity alone makes it interesting and any film with Stewart is going to have a sincere tone. As a tech movie it falls flat. An aeronautical engineer overlooking the fact that temperature affects metal fatigue is on the order of a builder forgetting to put a roof on his house. That said, the performances, surreality and Stewart make it worth a watch. (Johns never made it big but she is perfect for this role, just ditzy enough.)