Sorry to burst your bubble but free markets are not the best way to motivate people, people do not want to work but simply want to be happy and live a fulfilling life.

Then again it is not a matter of putting cheap batteries in vehicles, it is a matter of not having road vehicles because the issue at hand right now is that we're currently aiming over the threshold where conditions making life possible on earth are going to go away.

Only option is massive reduction of human population and energy use.