See also:

Current speed in km/h (U.S. models only)
This function provides the driver with an instantaneous conversion of the car's current speed from mph to km/h. ...

Seat belt pretensioners
All seat belts are equipped with pretensioners that reduce slack in the belts. These pretensioners are triggered in situations where the front or side impact airbags deploy, and in certain impacts ...

Driving Impressions
Understated and elegant, the S80 is spacious throughout and delivers a smooth, easy ride. Automatic-transmission shifts are smooth yet noticeable. The easy-to-drive S80 promises excellent control ...