Not that I assume you can find it cheaply, but fiber optic cord (if you can find it at length) can transfer the light of the tail lights to any direction you'd like it, and doesn't degrade the light too much.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
|