30 years automobile exhaust gas catalyst
Since its introduction in Germany in September 1984 the catalyst is now ubiquitous for nearly 30 years. The picture shows an Ascona with a 1,8 litre engine for the German police in 1984 and therefore was the first Opel with a catslyst. On the website of auto-news.de there is an article about the development and technical progress of catalysts which is even illustrated by a picture gallery.
auto-news.de- 30 years catalysts (in German)