Waymo fired a public shot at Tesla's autonomous driving approach last week, arguing that cameras alone can't safely handle full autonomy and that Tesla's "pure end-to-end" AI model risks unpredictable failures. The timing was deliberate—just one week before Tesla's September 3 event unveiling the Cybercab. Waymo backed up its claims with real numbers: over 200 million miles of driving data, 4,000 robotaxis operating across 14 U.S. cities, and 500,000 paid trips per week. Their argument boils down to redundancy—cameras, lidar, and radar together create what a single sensor type can't. Tesla's approach, by contrast, relies entirely on cameras and AI, betting that software trained on enough data can handle anything the road throws at it. The debate exploded on social media, with Tesla supporters calling Waymo's stance the incumbent's death rattle and Waymo firing back with pointed metaphors about data-driven safety. The two companies represent fundamentally different bets on the future of autonomous vehicles. Waymo installed its sensors on vehicles built by other manufacturers—a more expensive approach requiring them to buy cars, outfit them, and handle import taxes. Tesla designed the Cybercab from scratch as a purpose-built two-seater with no steering wheel or pedals, aiming to manufacture over 125,000 annually. That cost difference matters enormously if Tesla's AI-only approach actually works at scale. Right now, Tesla is far behind schedule—Musk promised a million robotaxis by 2020, and the company has only recently removed safety monitors from most vehicles in its small Texas and Florida trials. They've started registering Cybercabs with the Texas DMV, and parking lots around the country are filling with them, suggesting a major push is coming. The real test isn't philosophical—it's whether Tesla can prove its software works reliably at scale without additional sensors. Waymo has already discovered countless edge cases: harsh weather, emergency situations, school zones. These aren't theoretical problems but daily operational challenges. Tesla still has to demonstrate it can handle all of this with just cameras and AI. If it does, the company could undercut Waymo on price and fundamentally reshape the market. If it doesn't, Waymo's more expensive but battle-tested approach wins. The robotaxi market could be worth hundreds of billions, which explains why both companies are fighting so hard to prove their model is the only one that works.