a guy at work told me about seeing a motorcycle (trike actually) that had a windshield that was etched on the sides and bottom with a design and lit with LEDs that would make the etches glow only. thought i'd do a little surfing on the subject and found this
there's a link to where the guy did a how to on how to do it
http://forums.bit-tech.net/showthread.php?t=142491
now, wouldn't it be freakin' sweet to have this on your rear window? would it be feasible? in the forum, the guy says he used 4 layers of plexiglass. how could we make a channel that would hold the LEDs? would take alot of modifying, but just think