Hello and sorry for my English.
Pierre Delcourt was my grandfather. This car has started being built in 1928. My grandfather worked in aviation during the First World War. And when he decided to build this car was the first to make wind tunnel tests. The body was made of paper mache (it's true) and contains major innovations, such as turning lights.
This car was burned in 1939 or 1940 so it does not fall into the hands of the Germans. She had more a hundred thousand miles on it.
Some of this information is in the book "Toutes les citroen" published by René BELLU.
I know that a french reconstructs a full size car and I would love to have of information. Thanks to post a message if you have news.