My dad says, with stuff like this there's usually a hidden catch, for example to make a Prius battery takes a giant amount of energy, and disposing of it is difficult. So like, in this case do they need to use electricity to turn the stuff into diesel? If so the electricity may be from coal or whatever. But if that's not a big factor, this sounds really exciting! My car isn't a diesel but I thought about a diesel when I got it so I know they aren't rare.