Cimier model

By 1933, the existing Voisin models were becoming outdated, as the new fashion was for 'aerodynamics'. Voisin managed to persuade his administrators to let him design a new model, the C25. The new design incorporated swept wings and finally departed from the previous angular forms. Front bucket seats and a rear seat for three were included. The interior was light and airy, in part due to a series of portholes let into the roof. Although the real excitement during that Paris Salon was the launch of the Citroen Traction Avant, many were struck with the lines of the Voisin. Concerned that the design might not be to the liking of more stayed clientele, Voisin also produced the Cimier model on the same chassis. The Aerodyne is one of the most desirable models of the marque.

With the roof open, there was a complete absence of frame, giving a wonderful open aspect.