My mechanical genius friend Fred talked about building a self-tuning tailpiece apparatus for guitar about twelve years ago, but never went anyplace with it. (He patented a new capo design and got rich off of that instead.)
I love that they mention on the testimonials page that Paul Allen of Microsoft owns own of their guitars. I thought Paul Allen has at least one of every guitar ever built. That boy has the world's worst case of GAS. But, hell, he can afford it.