I own a non Brabus Cabrio, and was unimpressed witht the lack of light in the back, so I went to a local car accessories place (
Mega-Watt Car Stereo and Security Systems), and had installed a LED array on both sides under the dash, and two lights in the back. It is wired to the single light, so it comes on when you open the trunk.
Now I can see what is in the trunk when it is night!
Here is a link to pictures:
Lights in the Smart Car
Reed