“@Teslaconomics Hard to make fuel on the Moon, due to the difficulty of obtaining hydrogen & carbon to make CH4. Much easier on Earth, where CH4 is plentiful. But maybe that changes once we get there and the city is humming. https://t.co/KJzCcHpWLH https://grok.com/share/bGVnYWN5_890acbfb-d015-4e60-8b1e-d4d9a398dcff”