Oil prices are now over $100 a barrel. This can’t be good for Planet Earth. With all our human ingenuity, why aren't the great majority of us driving vehicles fueled by some other more abundant and planet-friendly substance? Can’t we invent a reasonably priced car that gets 200 miles to the gallon? Oil has often been the topic of films over the ages. Here are 8 wise comments from motion pictures about fuel and why our collective planetary fuel gauge is running low.