2009 S-Class facelift to feature Mercedes-Benz SPLITVIEW Screen Technology
The 2009 Mercedes-Benz S-Class will debut an enhancement to the vehicle's COMAND navigation and entertainment system called SPLITVIEW. Yes, you got it right, it's going to appear in a production car. Basically, the COMAND 8 inch LCD screen at the front will be able to display two different screens depending on the angle you are viewing it from.

For example, the driver sitting on the left (in a left hand drive car) will be able to view a screen displaying GPS navigation maps and instructions while the front passenger viewing the screen from the right will be able to watch a DVD. To prevent distracting the driver, the passenger can use a supplied pair of headphones for the DVD's audio.
This is achieved by a technique that places pixels adjacent to each other, then using a filter that divides the images in such a way that only certain pixels can be seen depending on the viewing angle.
[Via: Paultan]