Cocoa nuggets and methods for their manufacture are disclosed. When an eye mark is superimposed on the parking space, the vehicle is stopped, and the steering angle of the steering wheel is made maximum and the vehicle is moved backward, to thereby complete the in-line parking at the parking space. The gate insulation layer covers the gate and the substrate. A hollow valve body with side ports is coupled on one end thereof to an axial end of the magnetostrictive assembly. The result of the determination is taken into account for generating or refining a confidence map.