My dad's new Saab has an graphical OLED display for displaying radio information, setting the time and date of the clock. It even lets you choose between 12/24h time and MMDD/DDMM date formats. There are not, however, any places on the car that the date is displayed.
Update: minor clarification. It shows you the date enough to set it, but nowhere does it passively display it.
amused
confused