It's definitely ridiculous and I wouldn't even call it technology. It's grasping at straws. And the more liberals ignore the reality of climate change and the need for a complete change in how we run society (and let's be real, only communism is an economic model compatible with life on earth since it's not profit driven) the more ridiculous their ideas and hopes for technological fixes (to allow the status quo to be maintained) will become to the point that they're basically hoping for magic. This is what Musk and his ilk are promising. A promise they will spectacularly fail to deliver on (to the surprise of nobody on this site).