How Mercedes' 'pink noise' protects your hearing from a loud collision

Crash safety technology has come a long way in the past decade or so, with cars that now sense an impending crash and can prepare the driver for impact or even attempt to avoid a collision entirely. Mercedes' current crop of E Class sedans take pre-crash preparation to an entirely new level, even going so far as to provide your ears with an extra layer of audio protection. It's called "pink noise" and it's designed to keep your hearing intact after being bombarded by the extremely loud sounds ty...