What aspect of Tesla is expected to be available for the public in September according to Musk?

The expectation for the public availability of robotaxis was highlighted by Elon Musk, as he envisions the rollout of autonomous vehicles that can function as taxis without human drivers. This development aligns with Tesla's broader mission to advance transportation through automation and sustainable energy. The anticipation surrounding robotaxis is part of a larger trend towards shared mobility services and could significantly impact urban transportation dynamics.

The other options, while relevant to Tesla's innovation trajectory, do not align with the specific timeline mentioned. Electric bikes have not been a primary focus of Tesla's recent announcements. Home batteries, while a key product for Tesla, relate more to energy storage solutions rather than the transportation aspect. Self-driving software is pivotal to Tesla's operations but is typically integrated into the vehicles themselves rather than being a standalone offering, making the introduction of robotaxis more distinctive and aligned with Musk's vision.