I found this article pretty interesting it seems the car industry has and is planning on adding "Black Boxes" to all the cars. These little "Black Boxes" similar to those found on planes will be able to track vehicle speed, acceleration, and deceleration, braking, steering and some air bag functions. In some cases data on vehicle roll angle, steering inputs, and passenger safety belt use will be recorded. Most of this, of course, is to be used in cases where you are involved in an accident.
The complete article can be found at
Yahoo News.