Chris

If you produce hydrogen by electrolysis of water, first of all you can do it with excess electricity production from the grid, given the massive increase in offshore wind that’s being proposed. If you split water into H and O2 then all your fuel cell does is recombine it. There is no net increase in water in the environment because you’re just putting back what you took out. Any chemical impurities can be filtered or chemically altered in the vehicle exhaust system just as is the case now.

Besides all this, there’s no need to worry so much about lithium because we’re not very far away from a practical lithium-sulphur battery that has the potential to double EV range - or half the size of the battery required.

I think we’re going to see a future of mixed approaches to providing electric power to vehicles. There’s room in it for hydrogen and batteries.