Why, exactly, is it better to make carbon fuels expensive? There is no rational basis based in scientific facts to do this.
We have not established a true danger or a significant link of any sort to detrimental effects of burning carboniferous fuels. None.
What is to be accomplished by using a demonstrably toxic battery system we cannot possibly generate enough wattage to sustain in the place of clean burning gasoline and diesel engines?
It may in fact be innovative, but so what? It doesn't work. And can't achieve the stated goals.
It's not that at some time in the future it won't work. It's just that, right now, it doesn't.