since then. With 12.8 percent of the Porsche SE voting shares, he also remains the second-largest individual shareholder of Porsche SE after his cousin, F. A. Porsche, which had 13.6 percent. Porsche's 2002 introduction of the Cayenne also marked the unveiling of a new production facility in Leipzig, Saxony, which once accounted for nearly half of Porsche's annual output. In 2004, production of the Carrera GT commenced in Leipzig, and at EUR 450,000 ($440,000 in the United States) it was the most expensive production model Porsche ever built. In mid-2006, after years of the Boxster (and later the Cayenne) as the best selling Porsche in North America, the 911 regained its position as Porsche's best-seller in the region. The Cayenne and 911 have cycled as the top-selling model since. In Germany, the 911 outsells the Boxster/Cayman and Cayenne. In May 2011, Porsche Cars North America announced plans to spend $80–$100 million, but will receive about $15 million in economic incentives to move their North American headquarters from Sandy Springs, a suburb of Atlanta, to Aerotropolis, Atlanta, a new mixed-use development on the site of the old Ford Hapeville plant adjacent to Atlanta's airport. Designed by architectural firm HOK, the headquarters will include a new office building and test track. The facility will be known by its new address, One Porsche Drive. In October 2017, Porsche Cars North America announced the launch of Porsche Passport, a new sports car and SUV subscription program. This new offering allows consumers to access Porsche vehicles through subscribing to the service, rather than owning or leasing a vehicle. The Porsche Passport service is available initially in Atlanta. During the COVID-19 pandemic, in March 2020, Porsche suspended its manufacturing in Europe for two weeks, "By taking this step, the sports car manufacturer is responding to the significant acceleration in the rate of infection caused by the coronavirus and the resultant measures implemented by the relevant authorities." In August 2022, Bloomberg News reported that Porsche has lined up interest in subscription of its initial public offering for a valuation between US$6085billion. It is expected to be listed on Frankfurt Stock Exchange in September. Relationship with Volkswagen The company has always had a close relationship with, initially, the Volkswagen (VW) marque, and later, the Volkswagen Group (which also owns Audi AG), because the first Volkswagen Beetle was designed by Ferdinand Porsche. The two companies collaborated in 1969 to