This expensive undertaking was ultimately part of a joint project with Volkswagen, dubbed ‘Colorado,’ officially announced in June 1998. The Porsche Cayenne and Volkswagen Touareg would share the same platform. Despite the identical architecture, each manufacturer initially used their own engines and developed their own chassis set-ups. Porsche was responsible for developing the joint platform at its initially top-secret Hemmingen site, while Volkswagen contributed its production expertise for large volumes.