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, allows drivers to give voice commands to the navigation system in their car. Grok will also answer a wide range of questions on just about any topic. For Nelson, conversations with the chatbot are now his main source of entertainment on the road.  Tesla is not the only automaker adding AI assistants to its vehicles.…