I talk for a while with Jon King of Corus, whose job it is to sell steel to car makers, and get the idea that aluminium car bodies are making some progress. The aluminium industry has claimed that usage of its material has grown to an average of 130kg per car. Jaguar XJ is all aluminium; BMW 7 is much more aluminium than it was; Mercedes S-class is a little bit aluminium. And what happens to the upper class trickles downs slowly to the working class does it not?