Bose, the audio equipment manufacturer, also makes an active suspension system for cars. Unlike the hydraulics systems that are common today, Bose's system uses electromagnets to raise or lower the wheels in response to bumps on the road.
Heck, it can even make your car jump or take a bow. See for yourself: hit play or go to Link [YouTube] - Thanks Algonkin!
Another "new" suspension system has been developed for military use with ferromagnetic fluid inside the struts allowing extreme differences in dampening. There are videos floating around the net of a HMMWV (or Humvee) using this system.
(Longer, more tests, in English.)
Only five or six total videos matching those search terms, oddly.