Yes but the plane still needs forward movement to get the necessary airflow to create lift, although the wheels/conveyor may be doing 100mph the airspeed on the wings would be zero (assuming there is no wind). Due to the fact that the conveyor belt matches the wheel speed, it would be impossible for the plane to generate any forward movement. Up until take off speed (air speed over the wings) the wheels are necessary to allow the plane to move, one the wings are generating enough lift to take off, then the wheels become redundant.