I don't think any of us know yet how practical or feasible it is. as an example you could show an incredible patent and video about how you can run a car on french fry oil. But to really scale that it would use up more energy just to grow all the potatoes then is needed just to run cars on gasoline. Point being we just don't know... This may be the greatest invention since sliced bread. We haven't heard a real independent analysis of it yet. Maybe someone could run a buy anyone they know at a lab company and give us some feedback.