I Have been waiting ages to see this (don't get Speed TV in the UK), finally its made its way to the realm of Google video, yes that magical place were copywright doesn't exist!
http://video.google.co.uk/videoplay?docid=-3611075207317469622&q=porsche+de+cadenet
So far I've seen the Ferrari and Aston editions but this has to be my favourite. Can anyone enlighten me as to if any other editions exist and what makes are covered?