I know it was for rear-wheel drive Citroens and originated on a Chrysler patent, but does anyone know of it’s origins? I’ve written to the Chrysler museum and various clubs and found only original advertising talking about it but nothing from an engineering standpoint. In a modern article reviewing a 32 Chrysler, it mentions that the engine is suspended at a low point and a high point to allow the engine to “rock in it’s own centre of gravity.” That sounds almost nautical, about the stability of ships and I’m thinking that the principles of ship stability (the centre of gravity should be below the centre of buoyancy to maintain stability, for example) might be where the idea came from. Any ideas out there? ❓