I have seen numerous types of speakers and subwoofers that came out in 99 that haven’t hit the mainstream yet. That seems like the same concept of ribbon speakers that you find in those richie high end stereo shops. I read an article a few years back that had a 1 cubic ft plexi box and for the sub, they used a compressor type motor that moved a piston like phucking a chick. And it had a hole down the center shaft. They said there was hardly a limit capping the maximum power-cubic ft ratio. And the test showed unheard of accuracy in all the fq ranges. I haven’t heard about or seen that since. I don’t think that this film type speaker would be better than having conventional drivers we use now. I think the imaging issues would be a major problem. And you might need more channel spectrums for fading and balancing. Seems like it would be a hell of allot more work. And it doesn’t say anything about power handling about those nor temp req. In a car that chit could get up to 160 in the summer. That metal would expand and contract and eventually fail. IMO of course.