Tesla owner Mike Nelson has been using the AI chatbot Grok in his vehicle for several months now. He finds it is useful, nearly irresistible, and dangerous. Nelson, a lawyer with a background in auto insurance, showed CNBC how he uses Grok on a drive around the New York metro area. Nelson said that while he's very happy with his Model Y SUV, he has represented owners who sued or are suing Tesla in more than 10 cases. The in-vehicle version of Grok, which is still in beta and developed by xAI,