That was the Predator to which I was referring
I heard whispers a while back about a new featherweight and if I remember rightly (and assuming they were correct) it's a crusher powered by a complete and custom-built, featherweight-scale hydraulic system.

I think Firestarter from the Netherlands is currently the only other feather in which proper hydraulics have been attempted. Haven't seen that up and running yet so could be a race to see who claims the mantle first