Just expanding on the electric plane thing, a friend of my brother is currently crowdfunding a project to develop a cheap retrofitted electric aircraft. The idea behind it is that it would charge from solar powered base units and be used to make short hop trips in remote areas of the world with poor infrastructure, eg in parts of Africa, for the purposes of shipping medical staff and supplies. So for that particular example you’re improving human health as well as providing a self-contained, low impact, sustainable trasnsport service. So in theory it’s possible to make stuff like that happen at some scale.
[Guy’s a total bellend though by the way, so you’d never catch me in one of his planes]