The predecessor to the entire truck versus man sub-genre of horror films; of course Steven Spielberg was at the helm of this fairly original concept film. It was the director's first film, the start of a series of films that would culminate in a canon that's lasted for forty years. This first venture had many of the same elements as later films, especially what many consider his magnum opus, "Jaws." The psychological play here rises to an ending climax that pales in comparison to some earlier horror films, and moments in the film still scare forty some years later. The driver is never shown, the situations that he puts the other driver into really scare, and no one seems to be around to help the injured party, which makes for some heart pounding sequences. It's a very simple concept, but with some character development for the part of David (Weaver) who is trying to get back to his wife. Does that have much bearing on the film itself? Not really, because the concept has a driver versus a truck on the open road, with several complications, and that's it. There isn't even all that much dialogue except in the first fifteen minutes. What makes the film watchable, as well as rich in foreshadowing and tension, seems to be the fact that they never seem to leave each other. Even in the moments when there's no chase, when it's quiet and we're waiting for the truck to appear around the bend, it's tempting to scream with anticipation. What also pushes the film past psychological and into the realm of horror is the fact that the truck driver in question randomly seems to choose this victim. It's hellish, the driver and the truck sometimes seeming like the exact same creature, and oftentimes it's hard to distinguish the face-like grill on the front of the truck from a hellhound driver's. Really, the best thing about this early film is that others afterwards weren't as developed and yet had much more story and character than this film, which is simply astounding.