Similar. GM uses an electromagnet to change the suspension settings (like the MKIII Supra's TEMS...with 20 more years development), but does not replace traditional spring/dampers. Bose from what I gather uses a fluid free design, where a magnetic piston rides up and down through a set of coil windings...no spring, no damper. The magnets actually support the entire load (which also makes me think...do they rest in the low position, or is there a lock to maintain height...kinda like the older air ride caddies and lincolns that sink...somewhat perminently after a while...