As with nearly everything associated with Tesla and its colorful CEO Elon Musk, the hype around the company's Robotaxi project has been considerable. He envisions a future where the autonomous driving technology powering the Robotaxi fleet becomes the monster revenue-producing engine of the electric vehicle (EV) king's business. While I think one company has a decent shot at carving out a huge chunk of the self-driving taxi market, it isn't Tesla. In fact, it's an enterprise that most people don't readily associate with automobiles at all. Miles ahead That company is Alphabet (GOOG -0.05%)(GOOGL +0.06%) known by billions as the owner of Google, the No. 1 internet search engine. For years, it's channeled some of the vast amounts of revenue it earns from search (and far smaller income streams) into other ventures. Its autonomous taxi effort, Waymo, is a directly owned subsidiary. With management's considerable support and gobs of capital, Waymos have become advanced enough to be common sights in several U.S. cities (most notably throughout my auto-dependent home of Los Angeles). Approval is coming soon for several other cities, namely San Diego, Las Vegas, Denver, and Tampa. First-mover advantage matters in both the tech and automotive worlds, and that especially applies at the intersection of the two. Waymo is actively providing service and earning revenue from it; what's more, it's clearly becoming a go-to choice for rideshare customers. At times, when I've been out on the town, I've either been told directly by people or overheard someone saying they're ordering a Waymo -- and not, pointedly, an Uber Technologies or Lyft. NASDAQ: GOOG Key Data Points The regulatory challenge And certainly not a Robotaxi. Tesla's pet rideshare project is live and operating, but only in limited areas of Texas cities Austin, Dallas, and Houston, and Florida's Miami, Orlando, and