The 5,458-acre site in Wittman, Arizona, was once the centerpiece of Apple’s ambition to build its own self-driving car. But after Tim Cook pulled the plug on Project Titan, the tech company put the testing ground up for sale. The deal, recorded June 5th in Maricopa County filings, is for $220 million — nearly twice the $125 million Apple paid for it in 2021. And it comes as Waymo expands its presence in Arizona, including new office space in Tempe.