During at least part of 1940 Peugeot was working on revisions to its line and had a 10 CV (tax horsepower rating) model in prototype stage. Images of the car and background information are from Automobilia hors-série No. 26, Toutes les voitures françaises 1940-46, les années sans salon by René Bellu.
An example prewar Fuseau Sochaux styling that was becoming dated at the end of the 1930s.
This design is less streamlined than the car shown in the previous photo. The passenger compartment has been squared up and the windshield is flat rather than V'd. The front end design is suggestive of 1939 Hudsons.
The enlarged glass area is evident here.
The trunk has a tacked-on appearance. All things considered, this design would have been out of fashion had it entered production in 1942 or 1943.
Here is what Peugeot actually used as a post-war design. The flat windshield is a hold-over from the prototype, but side windows are smaller. The front with its lengthened fenders seems inspired by 1942 model year American styling.