New city, new energy

From the BBC:

On the edge of the Saudi Arabian desert beside the Red Sea, a futuristic city called Neom is due to be built. The $500bn (£380bn) city – complete with flying taxis and robotic domestic help – is planned to become home to a million people. And what energy product will be used both to power this city and sell to the world? Not oil. Instead, Saudi Arabia is banking on a different fuel – green hydrogen.