Tesla's share price is currently being influenced by the company's robotaxi expansion in Austin and its recent reveal of a 'flying' Roadster. The growth of Tesla's Cybercab fleet to over 300 vehicles, along with plans for expansion in Dallas, indicates progress in its self-driving car initiative. The Roadster reveal has sparked investor interest, with analysts noting it as a significant engineering achievement and a potential clue to a collaboration with SpaceX. These developments are contributing to market optimism and could impact Tesla's valuation.