Are you referring to this article.....
http://www.germancarfans.com/news.cf...001/bmw/1.html
... which includes this paragraph:
Already used today to meet the most extreme requirements
So far carbon-fiber or composite carbon materials have been used mainly for individual components in aerospace and motorsport. Particularly where the material used has to withstand heavy loads whilst keeping weight to a minimum and thus offering supreme stiffness and strength, designers and construction engineers now use carbon-fiber-reinforced plastics to an increasing extent. The monocoque of the WilliamsF1 BMW FW 25 Formula One racing car, for example, is naturally made of this ultra-strong lightweight material.
I believe they call this marketing.