Tesla shares have faced renewed scrutiny after Future Fund's Gary Black argued that the company's unsupervised Full Self-Driving and robotaxi rollout has slowed sharply from earlier ambitions to a fleet of roughly 90 to 100 vehicles growing about 10% a week, weakening investor confidence that autonomy will scale. Black contrasted Tesla with Alphabet's Waymo, which he said operates 4,000 unsupervised autonomous vehicles without safety monitors and completes more than 500,000 robotaxi rides a week, and he warned Tesla's vision-only approach may be exposed if rivals build safer systems by spending more. In separate comments, Black said Tesla also needs a long-term marketing and branding strategy for robotaxis and the Optimus humanoid robot, arguing that execution and positioning gaps make the stock's roughly 195-times forward 2026 earnings valuation difficult to justify after a more than 27% year-to-date decline.