Well... if one assumes one has a 3D printer, I guess it can be done.
Maybe "U" molding or something like a "C" so the LED has a place to go and you have something to attach to? Who was it that cut the leg off their T-Molding to get EL wire under theirs?
How much would you need? What's the bare minimum for an unbroken job on a typical cab? Let's say... 8 feet? Can a 3D printer print out a long continuous job like that? Adafruit made theirs pretty short. I figure because the size of the table was a limiting factor.
Maybe an assemblage of "scales" or chains that can be pieced together to form one continuous strand? Kind of like Tim Burton's Batmobile Cocoon-mode. Can't imagine too many cab designs that would look good on though.