They don't make movies like this anymore. No Highway In the Sky is an unusual film and is hard to classify into a genre. There are elements of comedy and disaster thriller, but at its heart it's simply the story of a scientist unsuccessfully trying to convince people that a particular new type of aircraft is unsafe to fly. More interesting are his efforts to reconcile his conflicting emotions about where his responsibilities as a scientist lie. Although it sounds like a heavy and possibly frustrating film, in fact it is neither, thanks to Jimmy Stewart's ever-watchable performance and an amusing flair.