For thirty plus years I've been wishing the USA would invest in mechanical battery technology. Unlike chemical batteries, flywheel batteries don't wear out and are extremely efficient. As far as I can tell the only drawback is they take more engineering to build. Really ?
So uh duh ? If that is true then all we need to do is invest in micromachine manufacturing technology and we can have zero emission cars that run for a hundred years. Seems like an obvious choice to me. Are you listening China ?