Waymo buys 5,500-acre Arizona proving ground for $220 million

Waymo has added a vast Arizona proving ground to its robotaxi arsenal, paying $220 million for a 5,500-acre site in Wittmann that long carried Apple-related speculation. Maricopa County records show the sale was recorded June 5, and Waymo confirmed the acquisition.

The purchase is more than a land deal. A proving ground gives an autonomous-vehicle company a controlled place to push hardware and software through sharp turns, dust, heat, braking tests and high-speed edge cases without relying only on public streets. For Waymo, which already operates in Phoenix and is expanding in San Francisco, Los Angeles, Austin and Atlanta, the new site strengthens a physical test network that now includes the Castle Proving Ground in California and the Transportation Research Center in Ohio.

That matters because scale in autonomous driving is not only about code. It is also about miles, validation capacity and the ability to iterate quickly on vehicles before they are sent into commercial service. Waymo said it had more than 100,000 paid weekly trips in 2024, then expanded curbside service at Phoenix Sky Harbor International Airport and began fully autonomous freeway operations in Phoenix and San Francisco. The company also said its Metro Phoenix service area had grown to 315 square miles, underscoring how deeply Arizona remains embedded in its day-to-day operations.

The Wittmann site has its own history. Prior reporting identified Route 14 Investment Partners LLC, the seller, as a Delaware shell company tied to Apple’s autonomous-vehicle efforts, and earlier accounts said Apple may have tested technology there. Chrysler previously used the property as a vehicle test site. Earlier reports put the acreage at 5,458 acres, slightly below the figure in the county filing, suggesting a parcel large enough to support expansive closed-course development.

The acquisition lands as Waymo is pressing a larger expansion. In February 2026, the company said it had raised $16 billion to scale its robotaxi fleet internationally and planned to add more cities, including London and Tokyo. Waymo has also said it is investing with Magna in a new autonomous vehicle factory in Metro Phoenix to support growing U.S. ridership. Taken together, the factory, the operating base and the new proving ground show how Arizona has become more than a market for Waymo; it is becoming a manufacturing, testing and deployment hub in a race where physical infrastructure can determine who pulls ahead.