This post is a testbed for a new "thing" in SP, unstable matter. What is unstable matter? Well, like the name suggests, it is collection of blocks that are unstable. Unstable matter doesn't conform to the laws of physics. It doesn't have any inertia. It will always shake, even if there is no force acting on it. It resists all motion (Other than its shaking), and it does NOT like to be rotated (Except for yawing). Unstable matter also seems to produce lift. It ironically seems to bring an odd type of stability to various vehicles.

When agitated (Jostled), unstable matter has a whole new set of properties...

Testbed controls:

Throttle and yaw to move.
Activator 1 to agitate (jostle) the unstable matter.