The dams and turbines provide renewable sources of power along with solar, and wind. One use of that renewable energy source is to fuel future alternative energy vehicles, thereby saving more fossil fuel for you. A win win. I don't understand the argument against the option of providing the choice (not a mandate), developing new ATVM technology, and/or the problem people have with emission free vehicles and the shift to a sustainable transportation system. You must see some benefit to the environment while maximizing USA sourced fossil fuels.............obviously not. Go three wheels.....ICE OR sustainable everyday ELECTRIC!How much carbon goes into building those dams? How much carbon goes into manufacturing those turbines? Like I said, it's not a carbon free system unless you ignore the dirty parts.