Mercedes-Benz Pre-Safe Pink Noise
It's been available on production vehicles since mid-2015, yet Mercedes-Benz Pre-Safe Pink Noise is no less interesting today. Tapping into your body's natural reflexes, it plays a short blast of "pink noise" when it detects an imminent, high-volume collision. This causes the stapedius muscle in your ears to contract, protecting them against loud noises and reducing any potential hearing damage. Yet another safety feature that you hope you'll never have to use.