Let me make this clear: I enjoy the B-movie/softcore grindhouse genre (EX: Steven Spielberg's Duel), and I also enjoy the Sci-Fi movie of the week for "so bad it's good" entertainment. Rubber can easily fall into both of those categories, but my problem with the film is that by the 45 minute mark you've seen everything this film could possibly throw at you (besides the surreal/genius final ten minutes, which I am not going to spoil in this review).
Now this is the part of the review when I knowingly become a bit of a pretentious pseudo-intellectual when it comes to this film, but something needs to be said about the film's techno score. I know very little about scoring movies, but the score of this film is incredible. After watching the film, I immediately picked up two tracks from the soundtrack on iTunes. I'm not sure if it's on youtube (it probably isn't), but if it is you should check it out. Okay, my pretentious pseudo-intellectualness is now over.
Rubber is not a great film, but it's an incredible ode to "no reason." People die for no reason, inanimate objects have supernatural powers for no reason, and unless you want a fun first forty-five minutes and a hilarious twist there's no reason to see it.