I can honestly say that I don't recall being in a car that displays the day of the week and the date. Why is that? Also, why don't the clocks in cars synchronize with the atomic clock like my wall clock at home does? These things seem very cheap and very basic but don't seem to appear, at least not very often, in modern cars.
On a side note, this article was interesting.
On a side note, this article was interesting.