Indeed, here is the video: https://www.youtube.com/watch?v=3KPYIaks1UY

It only worked so well because they rigged the tests. The suspension was tuned for exactly each demonstration, it wouldn't work under normal mixed conditions. The system was also extremely heavy and used a boatload of power for the actuators.

A well-setup conventional suspension system works nearly as well for anything you would encounter in the real world, and it's a lot less expensive. Even Citroën (the kings of hydropneumatic active suspension) will be going with traditional suspension only from their next generation C5, despite being stalwarts of active suspension tech since the 1950s.

Having driven a C3 through southern Germany on vacation recently, I see their point. That silly little car was significantly more comfortable than my older, larger Peugeot sedan, and more comfortable than even the 1st-gen C5 my parents drive.

Conventional suspension tech has come a long, long way.

Watch the Bose suspension videos; they include a car vaulting over road obstacles.

Unless you're driving a truck, suspension doesn't have enough distance to switch to soft and nullify the bump for bumps of reasonable size.

That if it wasn't super hard to change suspension properties on the fly.