2,000 Pre Orders from airlines. So there seems to be significant belief in hydrogen despite all of the challenges. But what i really want to know is. Are we going to be able to jet off to spain anytime soon in a Hydrogen Plane . History shows that you need to start small and grow big. And that growth would take a while. But if this could be scaled to the largest of planes, then the difference to emissions would be jumbo. You know, it sounds like, if they can get it right, Hydrogen Planes could be a massive deal. Yeah. Its as much about the infrastructure, though. Theyve got a lot to do. Right, 0k, noted. 0k, were going from the air to the sea now. You might not think of the worlds oceans as a great source of green energy, but when you think about it, the tides move an enormous amount of water around the globe every single day, and we are discovering new ways to harness this tidal power