In the '80s I'd read about the carbon fiber Bond Electraglide, with the sawtooth neck. The "frets" were molded as a sawtooth shape, and it had advanced electronics for the pickups. It was something like $1200 or more. Then I was in Boston at a guitar shop and they had one, marked down to $350 for some reason. I guess they didn't sell and went out of business. I went home, but kept thinking about it, so I called the store to see if they still had it. I had them ship it to me.
It was a fun guitar with a nice tone, and I enjoyed playing it, but the electronics didn't agree with me so I removed them and installed conventional pots and switches. It was poorly balanced, so I added weights inside the hollow body.
I eventually sold it for not a lot of money, but if I'd kept it original it would probably be valuable today.