Apparently there's been a debate on that at some point. My main gripe with Hydrogen fuel (or any renewable fuel for that matter) is how relatively convoluted the whole process of getting the energy of fuel from point A to point B. Biofuel has to be manufactured and then transported before it can fill up a tank. With battery electric vehicles, you just plug in and the electric grid does the rest. Really, the electric grid is a far simpler way of transporting energy. As for where the energy comes from, honestly, putting up solar panels and wind turbines are far less intensive than a fuel factory.