Hardcarve One Series - one pivot per truck.
The One-8 (8 wheels, one pivot per truck, spring return, hard turn limit for slides, dynamicaly stable rear and front angle) is the next board for fab, and will hopefully be the best to date. Stay tuned.
There is a possibility of creating a live-axle skateboard with friction or centerfugal slip at the wheels; this would also alow pratically unlimited speed without tight trucks. We'll see if I ever get around to that :) It would be a one-pivot system too. (note most classic skateboards are one-pivot with elastomeric return to center)