Dave I've written around 280 stories in five years in Medium since starting on the subject around five years ago as a long practicing systems Engineer. I don't do snake oil, just Engineering. You claimed you could write a book to explain your logic. I suggest you do, or study ten years and work twenty to become a systems Engineer, then write 280 stories. The proof of everything I said is here, in Medium, in my stories, backed by formal Systems Engineering analysis. You could research a little of that if you seek proof of what I am saying, and if you have a problem with any of it, please feel free to question any of the analysis.
Rare Earth elements are contained in some quantity in all electronics, that is a fact of life, but batteries are almost completely comprised of Lithium. That is a fact we can't get around, and which ultimately limits what can be done with batteries.
Your EV, ownership of which I guess is the reason you are so pro-battery, can easily be converted to run on a fuel cell, which would fit with a solar-hydrogen ecology. That wouldn't make much difference to you, except you wouldn't be driving around with a large store of toxic Lithium.
An example of the food I mentioned generateable from hydrogen, which is in turn convertible from electricity by sunlight is "Solein", check it out, if you are interested.
The water filtration process is an automatic side effect of converting water to H2 and back again, like distillation, it is a process which has to remove impurities from water, because the impurities can't become part of H2.
Vehicles consuming hydrogen have to produce the filtrated water continuously, fuel cells and vehicles do not need much modification to make that water human drink quality. Lots of vehicles in a hydrogen ecology would be circulating lots of clean water, which could be exchanged for hydrogen fuel produced by any domestic or industrial solar community hydrogen outlet.
The economics effects of all of this are even more surprising, warranting also a book in its own right.
Weighing it all up, we should see EVs are good, a useful stepping stone of progress, but ultimately HEVs are even better
