/**
   Represents an automobile.
*/
public class Auto extends Vehicle
{
   String plate;

   public Auto(String _vin, String _plate)
   {
      super(_vin);
      plate = _plate;
   }

   @Override
   public String getID()
   {
      return String.format("VIN=%s,plate=%s", super.getID(), plate);
   }
}