For most cars this wouldn't be needed, but for me doing the Caterham, I would like to see the lights operating via materials rather than instances (like the LED's do). This would allow them to break off with whatever goes with them, not having them float there magically working! Also, if the front light housings break off, because they are also in the cockpit instance, they appear to not break off! Not sure how I would wish this, but I wish for some way of having an instance in both external and cockpit to be one and the same!
