Elon Musk has made a significant admission related to Tesla, specifically regarding its Full Self-Driving feature. It appears that millions of Tesla owners may need upgrades to achieve true full self-driving capabilities, which has sparked controversy and lawsuits. The admission has also drawn attention to Musk's past promises about the feature, with some outlets suggesting it may be related to other topics, such as his involvement with OpenAI, although the connection to Tesla is the primary focus.