Honda's Drive Recorder will detect impacts and save information for the 12 seconds before and 8 seconds afterwards, aircraft black-box-style: forward-view imagery, along with sound and data on speed and deceleration rates all get stored on an SD card in its main unit, ready to be uploaded to a PC.
Its 135-degree field of view camera gets hung on your windscreen, with all the accelerometry going on inside the 4.5 x 3 x 0.8-inch black box itself. Honda hopes this system will turn you into a safer driver, though we imagine it might also make insurance claims a little more straightforward. You can also switch on recording just for the hell of it, and amuse your friends with a show later: "Hey, check out that braking after I missed the red light." Available in Japan for ¥54,600 (around $500), and, sadly, only if you have an Honda car or your name is Jenny or Debra.