In case of a car accident, these are detachable bass speakers on a retractable cord that can be ferreted from your car to the dying accident victim. These bass speakers are then placed on the victims chest, wherein, you walk back to your car, turn up the volume and put on some techno.
-- leinypoo13, Dec 28 2009

Why not build them into these? Audio_20Airbags
[normzone, Dec 28 2009]

This would eliminate the need to say "Stay with us, you can do it, help is on the way". You just need a sound track that does it for you.
-- normzone, Dec 28 2009



random, halfbakery