The way I read it donkey punch was asking you a direct question that you not so neatly sidestepped, going for a career change in politics?? Your comments re hydrogen are at odds with lined gasses massive investment in the production of hydrogen. Hardly likely to do that with no market. With regards to lithiun iron batteries the technology is sound all the publicised failures, including aircraft batteries have been because of poor manufacture or misuse, which can have the same effects with any power source or stored energy system.