The thing about substantial engineering effort is that there's a time component that you just can't get around.

For all the talk you hear about breakthroughs, real world technological progress is astonishingly linear. You can generally put a ruler on a chart and declare that in 2035, batteries will be this cheap and this efficient.

There will come a point at which this tech actually makes economic sense and when that point comes, it's going to be a LCD TV moment where suddenly everyone just switches. But it's going to take longer than the EV fanboys want to believe.