Not that I am considering, or planning on doing something like that... but, in reading some tech specs for the Rolls Royce Wraith, I see that it has available starlight headliner option, and the RR Individual can even make up your Zodiac sign with the fiber optics, if you desire so (and pay for it!!)...

Has anyone here play with something like that? maybe did a retrofit into something other than a car?

the original headliner part number in RealOEM is 51447401012

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E53 X5 4.6iS
147K mi - Sold May 2013
Tireprints left in:
USA, Nicaragua, Costa Rica, Panama, Russia

E53 X5 4.8iS built 2005-10-17
66200 mi - June 2012
96000 mi - June 2013
112000 mi - June 2014
OEM fire extinguisher
OE first aid kit
OE tow hitch
OE TV module
OE aspheric mirror
K&N air filter
black/white badges
rear camera
4-channel video recorder

Here is the list of things I have done to the X