Thank you, @Chris_Perkins1 for this wonderful story (https://www.roadandtrack.com/car-culture/a42747658/citroen-suspension-gs-technical-analysis/) on the Citroen GS. I had one imported in 1982 when I worked in NY (see pic below)

🐦🔗: https://n.respublicae.eu/EugenAFreund/status/1622876816649207808