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The video opens with Elon engaging with the robot, asking it to assist in finding a Coke and suggesting a trip to the kitchen. Optimus responds with a friendly, conversational tone, indicating that it is "just chilling" and ready to help. The robot’s communication seems to be powered by Tesla's Grock system, which also supports voice interactions in Tesla's vehicles. The robot demonstrates a degree of mobility, suggesting it could walk faster once space constraints are addressed.