Last time I plugged it in it was mostly working but the motorized chair was not moving on it’s own with joy stick controls. The leather upholstered seat is rough and a piece of sheet metal around the joystick is rough both easily replaced. Extremely rare should be in a museum. This machine is from 1975 at the time of release it was the largest machine built and is fully electromagnetically controlled with wrap around projection screen. Check out a YouTube video to see one in action.