The future of automotive fuels will be an assortment of different alternatives all at once. I feel that we have the technology to completely be free of fossil-fuels, so why make all cars hybrids? I believe the future of cars will comprise of all-electrics, fuel cell (run on water), run on air, ethanol, biodiesel, and/or combinations of those. Why get a gas-electric hybrid when you can get an ethanol-electric hybrid? After all, not only is ethanol cleaner but it's more efficient and more powerful with a higher octane than regular fuel.