Steve Caplin dives into the world of tech, telling Simon Rose about plans for charging users of ChatGPT and problems with Google's launch of its rival, Bard. There's also a stunning phone camera, how driverless cars might better cope with crossroads, Twitter being sued by the Crown Estate, a portable coffee printer, why skiers with Apple watches are annoying the Colorado police and a skyscraper in Detroit being built from the top down.
