Cathie Wood, CEO of ARK Invest, is betting that Tesla's robotaxi business could become the most valuable company in history, potentially worth over $9 trillion by 2029. That's a staggering claim, but it hinges on one critical assumption: Tesla must win the autonomous vehicle race against Waymo, which currently holds the technology lead with fully driverless Level 4 robotaxis already operating in select U.S. cities. Why Does the Robotaxi Market Matter So Much? The robotaxi opportunity isn't just another revenue stream for Tesla. According to ARK Invest's research, the global autonomous taxi market could reach $8 to $10 trillion, and platform providers like Tesla could capture 30 to 50 percent of that total revenue. What makes this different from traditional car manufacturing is the profit structure. While Tesla's current automotive gross margin sits around 16 percent, Wood projects that robotaxi operations could achieve margins approaching 90 percent once the business scales. The math is compelling. A software-driven platform with high fleet utilization and near-zero incremental cost per ride transforms the entire economics. Every additional mile driven on a Tesla robotaxi network costs the company almost nothing, while revenue compounds. This is why Wood compares the potential to Apple's services division, which runs gross margins above 70 percent. Who's Actually Winning the Autonomy Race Right Now? Here's where the story gets complicated. Waymo currently holds the technology advantage. The company operates Level 4 fully driverless robotaxis in select U.S. cities with no human supervisor required, meaning the vehicle can handle all driving tasks without any human intervention. Tesla's Full Self-Driving (FSD) system remains at Level 2, which means drivers must stay attentive and ready to intervene at any moment. The gap between Level 2 and Level 4 is not merely incremental. It represents some of the hardest unsolved problems in artificial intelligence. Waymo uses lidar sensors, high-definition maps, and expensive hardware configurations that cost significantly more per vehicle. Tesla, by contrast, uses a camera-only vision AI system that is cheaper to manufacture and already installed in millions of vehicles on the road. Wood's counter-argument focuses on scalability rather than current capability. Tesla's data advantage from real-world miles driven by its global fleet is what ARK believes will ultimately produce superior AI, even if Waymo has the head start. How to Evaluate Tesla's Robotaxi Bet: Key Factors Investors Should Watch - Production Scale: Tesla plans to produce 2 to 4 million Cybercab dedicated robotaxi units annually starting in 2026, while Waymo's current fleet is measured in the thousands. Manufacturing scale is simply incomparable if Tesla achieves full autonomy. - Regulatory Approval: Wood has stated that "we don't think technology is the problem anymore. Regulation has to catch up," positioning the remaining risk as political and bureaucratic rather than engineering. - Competition from Chinese Players: Baidu Apollo, Pony.ai, and other Chinese autonomy competitors are advancing rapidly and already operating robotaxi services in major Chinese cities, adding another layer of competitive pressure. - Technology Validation: A limited, supervised robotaxi service in Austin, Texas is already operational, providing real-world data about how the system performs in practice. The production comparison is stark. If Tesla achieves full autonomy, the manufacturing scale would dwarf any existing autonomous vehicle deployment. The critical open question remains: does Tesla's scale advantage outweigh Waymo's proven technology lead ? What Could Go Wrong With Wood's $9 Trillion Thesis? The bear case against Wood's projection is substantial and deserves serious consideration. Tesla's FSD is still Level 2, requiring human supervision, while Waymo already operates Level 4 commercial robotaxis. The gap between supervised assistance and fully autonomous operation is not merely incremental. Regulatory approval timelines remain uncertain and vary dramatically by jurisdiction. Liability frameworks for autonomous vehicle accidents are still evolving. There's also the track record issue: ARK Invest's previous Tesla price targets have not been met on schedule, and investors who followed ARK's previous bold calls have experienced significant drawdowns waiting for the thesis to play out. Additionally, Nvidia's role supplying AI compute for autonomous vehicle development makes clear that the underlying technology race involves deep partnerships and capital intensity far beyond any single company's internal research and development. The Binary Outcome: All or Nothing? The investment case for Tesla in 2026 is not primarily about electric vehicles. Global EV sales growth has slowed, competition from Chinese manufacturers has intensified, and Tesla's share of the EV market has declined from its early dominance. At $244 per share, Tesla already trades at a premium that cannot be justified by its car business alone. What the market is pricing in, according to Wood's analysis, is the potential transition from a cyclical car manufacturer to an AI mobility platform. Recurring revenue would replace lumpy vehicle sales. Software margins would replace manufacturing margins. The company would join the ranks of high-multiple technology platforms rather than competing for the 15 to 20x earnings multiples typical of automakers. The scenario analysis is binary in character. If robotaxi works at the scale Wood projects, Tesla potentially becomes the most valuable company in history. If it does not, the stock is materially overvalued even at today's price. ARK Invest's $2,600 price target for Tesla by 2029 implies a market capitalization exceeding $9 trillion, making it the most valuable company in history by a significant margin, and represents a roughly 10x return over three years from the current trading price. The model attributes 63 percent of Tesla's projected revenue to robotaxi operations and 90 percent of the company's total value to autonomous mobility. The key assumptions are aggressive: Tesla must achieve regulatory approval for unsupervised autonomous operation in major U.S. and international markets, scale Cybercab production to multi-million units annually, and maintain technological competitiveness against both Waymo and Chinese autonomy players.