Electric cars use electricity guys - so, again we are facing with the question of nuclear energy. And though it is environmentally friendly during operation, mining and disposal of uranium is not.

About the edvanced battery technology - this is probably one of the few technologies that hasn't moved a lot during the past 100 years (i.e. since are used). Batteries are still using the same design and the only new thing is that they now come in different shapes and sizes (mind you, this is hard as well).

Be careful! Is it classified?