Anyway. Gretna Bikes have a product called a Rothrocker. I'm guessing this is named for the forest near State College, PA, that is home to some awesome trails. The bike is basically a steel front triangle, with a carbon fibre rear stay assembly bolted on.
The twist is that the stay behaves a little like a leaf spring. It should offer good lateral stiffness, with a fair amount of bump absorption and as a bonus be easy to travel with ... cool eh?