I’m suprised no-one mentioned Dr. Decker’s venture: http://www.rainsong.com/
I have one of his earlier guitars and it’s entirely made of carbon fiber and resin, even the soundboard. Bright and loud, it has a nice sound that’s immediatly recognisable.
It was developed to withstand the challenges of Hawaii’s humid climate and is completely unaffected by drastic changes in humidity and temperature. That alone seems like a significant benefit. I don’t think CF would hold tuning pegs like wood does though….
I’d imagine combinations of CF and wood would have some logistical concerns (like gluing), but I see no reason when