Thanks for the background - knew the availability for computer adjusted suspensions but not the background info.
I thought Citroen had hydraulics in the 70s - a guy I worked with had to change a tire on his and he decided to show off by driving around the parking lot with only 3 tires on the car.
Seems I remember seeing a commercial about that back in the day.
The transition to full hydrolics was slow. In my research I guess the first of it was in the early 60’s Fiats with the dampers. They were crude and did an adequate job of providing a level, if not rough, ride at speeds. But most of the technology for what we have now was spurred by racing rather than street.
rwood