The present invention provides a play toy system using a remote-controlled traveling toy, which enables the remote-controlled traveling toy to make a movement that is more unexpected than before, for play. A method in accordance with a particular embodiment includes applying a therapeutic electrical signal to a patient via an implanted portion of a patient stimulation system that includes a signal delivery device in electrical communication with a target neural population of the patient. The computers are also linked to sensors which send information, such as the speed and position of the tows, to the computers for display. The second load terminals of the power field effect transistor structure and power diode are formed by a common load terminal. The first drain extension is of the second conductivity type and extends laterally from under the gate past the drain contact.