Audi announced that it will bring a new concept car to the Frankfurt motor show in September - and this concept will feature OLED lighting tail lights. As always, Audi says that OLED provides a thin, efficient and low-heat light source, while achieving a new level of homogeneity while opening new design possibilities.
Audi calls this new design 'Matrix OLED technology". From the prototype photo above, it seems that they will use transparent red OLEDs placed one on top of the other. Then again this may be just a design sketch, we'll have to wait for September to know for sure.