See also:

The concept
This system can be used to select a desired speed that the vehicle will maintain automatically on clear roads. To the extent possible, the system automatically adjusts the speed to a slower veh ...

Distance to back of head: electrical head restraints
The head restraint is automatically repositioned when the shoulder support is adjusted. ...

Exterior
The exterior remains the same for 2009, and the X3 retains its awkward angles, disjointed taillights and odd lower bodywork. It's not unattractive, but it sure isn't as stylish as Mercedes' new GL ...