The Citroen 15 G Saloon was also a innovation of it’s era, apparently a thing Citroen kept doing in those times.
The 15 G saloon was built using the latest monocoque technology available in that time ( the same technology is used in building cars today ) for which it was developed a certain type of crash test, in which the car was driven off a cliff to prove the resistance of the chassis. The car possessed a unique look that some critics called it somewhat old fashioned. Also it was fitted with the state of the art independent sprung suspension which used a torsion bar and a wishbone suspension arrangement.