The fact that it records front and side G's is king of interesting.
:edit - Check out the "Driver Falls Asleep" footage.  Its a AAA Emergency vehicle!
:edit again - "Car Hit From Side" - after the impact, the camera is trained on the sidestreet where the violator pulled out.  There's a stop sign posted plain as day right there!  And what's more, after the accident, a plain white panel truck drives right through the stop sign, too!