Are the Tesla robots real?

Could you elaborate on the authenticity of the Tesla robots? Are they mere prototypes or are they fully functional and operational in the real world? I'm curious to understand if they've been tested and proven to work effectively in various industrial settings. Additionally, what are the primary use cases for these robots, and have they been adopted by any companies for their production lines? It would be insightful to gain a clearer picture of the progress and potential of these robots.