Am I missing an ironic in-joke?
Although groundspeed will be simulated by moving the wheels, this won't create any lift, as air won't be travelling over the wings.
Therefore it won't take off. Isn't it obvious?
Perhaps with a tiny model plane the surface of the conveyor belt will cause sufficient friction with the surrounding air to move a small body of air in close proximity, but this would be pretty limited.
Plane in a wind-tunnel would be a different matter.
Cheers, Rich