The upside is that very little engineering was required for the in-bed speakers - there's not much to engineer. Surface transducers ("exciters") have been around for years and are very cheap to manufacture. Consisting of only a coil, magnet, and frame, they are basically speakers without cones. It's a safe bet that the entire system consisting of 6 exciters, an amplifier, wire, and software for the infotainment system probably cost Honda less than $100. Of course, I think most of us will agree that that $100 would have been better spent elsewhere.