I'm almost sure I saw a fork like that on some class of newer Trek hybrid.

Incidentally, the position that "carbon fails catastrophically' whiffs a bit of dogma. I've broken 3 carbon parts in my riding days (handlebar, stem and seatpost), and they all failed with a crack and a whimper, rather than sudden snap and a face plant.

This is not to say it WON'T fail catastrophically, just that it's not a forgone conclusion.