So I've been around a lot of BMWs and I never really noticed how special some of the newer tail lights are (E39/E60).
They are called Celis lights in BMW town, which I guess is the company that makes them.
Am I to assume that that is a curved piece of optic tube with LEDs shining into it, and the scores in the optic are what diffuse the light? My other assumption is that they are not CCFLs, because that is cheap ass shit. I'm really curious how these work, does anyone know anything more? I want to take one apart, I should have kept the broken one from when my dad's M5 got rear-ended.