The Mercedes ABC (Active Body Control) system is good. But if you watch the video - this one is amazing.

The Mercedes system used hydraulics. If the Bose system works the same way their truck seat does (the "Bose Ride") then it's run by a combination of pneumatic & electromagnets, and I'd be curious how they get enough current to run it.

ABC: https://www.youtube.com/watch?v=clyUmA5lRcg

Bose suspension: https://www.youtube.com/watch?v=q8sVDenpPOE

Bose Ride: https://www.youtube.com/watch?v=T_G9GCpWAcM