Buyers can get a blind spot detection system that lets you know immediately - with a glowing light on the side mirror - if the way is clear to change lanes. Also, an alarm sound and blinking red light bar reflected in the windshield can warn you of an impending frontal collision while you still have time to react.
For the truly paranoid, the S80 offers a key fob that can warn you of an intruder hiding in your locked car.