Have you guys seen the Audi A3 Clubsport Quattro's LED air brake? It is a bit over the top, but very cool nonetheless.
The electrohydraulic air brake lifts from flush to "nearly vertical," cutting the A3 Clubsport's 155-to-0-mph stopping distance by almost 40 feet. When deployed, it acts as a blinking third brake light so that others know that they are about to rear-end you.
You can't really put this air brake spoiler on the Q3 since its a hatchback, but I still think that its a interesting feature that I'd like to see in real life up close.