Happy Summer Fantasies

Just think of what the world would be like in ten years if some guy's invention turned saltwater into an energy-efficient fuel for internal combustion engines (what waste product is created, salt?), or if shale oil extraction became economically viable, making the United States the world's largest exporter of petroleum. The "saltwater engine" is likely not a real possibility, but again, this is a fantasy. Even if it were possible, wouldn't solve all our problems, and would probably create some new ones - but such a world would be pretty cool, wouldn't it?