There is something vaguely reminiscent of the 2CV in that bodyshell, right?
In 1935 Le Corbusier and his associate (and cousin) Pierre Jeanneret submitted what they called the Voiture Minimum project for a "design the next small car" competition organised by the French equivalent of SAE, la Societé des Ingénieurs de l'Automobile.
Their *Voiture Minimum" did not win, but it must have caught the eye of some members of the jury who were Citroën engineers. So much so that in 1936 it went on to have a considerable impact on the design of the TPV or toute petite voiture ("very little car"), Citroën's internal code name for the 2CV.
Further, one of the engineers in charge of the TPV was a certain André Lefèbvre, who had previouslyy worked with Gabriel Voisin; and Voisin himself was also a friend of "Corbu"...