As ca french empeg owner, and as a Citroen Xsara owner , I am very amazed to read threads about a french car like 'la deux chevaux'.

One of their innovative product on the 'DS' that was never produced was intelligent light on a car but I saw on TV that some european car brands are giving electronis ameliorations to the system :

It was 'only' turning lights adapted to the road.
Imagine you are driving in mountain with zig zag road and the next way of the road is turning to right , so the lights will turn to light the road and will give comfort to your driving because you don't discover to late the road.

This system should have been produced on a DS, but never made.