Elon Musk told investors on Sunday afternoon, Adelaide time, that Optimus and the Cybercab "will be the vast majority of Tesla's value." Hours later, The Verge published a long piece arguing that cities all over the United States are now writing their own rules for robotaxis. And in Austin, Tesla's Cybercab, a two-seat car with no steering wheel, no pedals and no side mirrors, now takes riders until midnight, 18 hours a day. Which raises the question cities have started asking out loud: when a car like that gets something wrong, who actually gets to tell it no?

Photo: Steve Jurvetson / Wikimedia Commons (CC BY 2.0), cropped