Have you ever driven or ridden in a Citroen DS21 at night? If not, you should try it on the roads of a residential area. When you approach the end of a road, a T-intersection appears on the wall opposite means you need to turn left or right. When you decide which way to go something magical happens as you turn the steering wheel -- the headlines turn as well either left or right. Citroen's development of this innovative system for the DS21 meant the inner lamps of the two light units would also adjust up and down with the cars self leveling hydropneumatic suspension. This was a great characteristic and the headlights did not dazzle oncoming vehicles either.
