In the morning, you appeared at your parents' yard during a long vacation. After passing through the gate, you see the surprised look of the parents who were waiting for you. —"Oh? Is this your new car?" your mom asked, hugging you while your dad tapped on the hood of a black Toyota Camry. Suddenly, the car, which was not used to such an attitude from humanity, drove back unmanned and fired its exhaust pipe once. —"Hey man, don't hit me so hard," an unmanned robotic car sound rang out.