A fuel injection start timing is determined based on the engine revolution or the engine load, and a common rail pressure is detected simultaneous to this fuel injection start timing. The integrity of the GPS measurements are checked if the first and second inter-vehicle distances are nearly equivalent. A link device connects the cover and the electrical potential sensor to each other so as to cause the movement of the electrical potential sensor in linkage with the openingclosing of the cover. A mechanism is provided within the passageway for exerting a bias force against the pressure responsive element which is sufficient to close the inlet opening to fluid flow absent a pre-established level of fluid pressure exerted on the pressure responsive element. The spraying and recooling steps are repeated until a thorough, even coating is built up on the discrete pieces of free-flowing food. The method includes providing a transistor structure having a first region, implanting a dopant into the first region, depositing a control layer adjacent the first region, and performing a first annealing process on the transistor structure.