The new tracks are consisting of steel plates fixed on a band of rubber. Each steel plate are supported a pave made of rubber outside and inside steering blocks in fiber and traction metal bolts
I have had this photo since 2018, and all along I thought it was a model P7 bis. On closer inspection, you can see that it is not quite correct, because the notches on the bands are different from the ones we know!
I haven't noted where I got it, I'm sure it's from a vintage car forum, has anyone seen this picture? Contact me if you have. HERE
In the book "Le grand album des Citroën-Kégresse sous l' uniforme" by François Vauvillier there is a page that mentions the new type of track.
The book is highly recommended, as there is a lot of information and pictures about all models that have been in military service in France.
The book can be purchased from the publisher Historie&Collections HERE