A vehicle which includes a main body provided with a main locomotion mechanism for traveling over a terrain. The preferential muscarinic acetylcholine receptor M1 antagonist, optionally can be administered with an anti-obesity agent, for example, an anorexiant. The reflecting electrodes are in contact with the semiconductor film at such positions that the surface electrodes, provided on the light-extraction-surface-side surface of the semiconductor film, are not over the reflecting electrodes along a direction of the thickness of the semiconductor film.