Tesla stock rises as Musk touts 'successful' robotaxi Austin launch
1. Tesla launched a driverless robotaxi service in Austin, Texas. 2. Shares rose 5% following the successful debut of the service. 3. Musk targets hundreds of thousands of self-driving cars by next year. 4. The launch competes directly with Waymo's established robotaxi fleet. 5. Public concerns over safety may impact future service expansion.