What I have to say is merely a repetition of what the other users said before:the two leads literally save the movie from absolute mediocrity.They are so good,their performances are so intense that they are to be commended for transcending the limitations they are working under .The script writers ,in order to make sure the audience understands they have been watching a "deep" "meaningful" work call Jeremiah (and the Bible) to the rescue,but it's too little too late.
This is the well known mix road movie/"there's a killer on the road" (as Jim Morrison used to sing),and even a child could guess who he is.But the film deserves a look ,weren't it only for the way two first-class actors can redeem abysmal scripts.