Silly to trust eatery staff with credit cards, but not Grok: Musk amid privacy fears. Amid privacy concerns over uploading credit card images to Grok for shopping, Elon Musk endorsed an X user's account of the bot completing a purchase using a credit card screenshot. "Seems a bit silly to hand...credit card to people you don't know at..restaurant, but not to Grok," Musk said. "The waiter doesn't have a 24/7 memory," a user replied.