[lunarhighway]

i think they're just there to allow the taillights to be seen from the sides...

a transparent panel would be a better compromiste between aero and not haveing to replace the lights i think, but you can't tell from the pics if they're really holes or more like portholes... the first picture has a grey rectangle on the inside of the spoiler around the holes... could be just a shadow but it might just as well be a resess for a transparent panel