Not every car comes with some teakwood. In fact, I can't think of any until now. The Rolls Royce Phantom Drop Head is a special vehicle. The convertible top is covered by a tonneau made from teakwood. It requires a special oiling at every service interval to keep it in good condition, and to prevent creaking. Opulence at it's finest.
Thanks to edmunds.com for the heads up, and the photos.
