code: def assumed_state(self):
          # pylint: disable=protected-access
          
          return (not self._controller.car_online[self.id()] and
                  (self._controller._last_update_time[self.id()] -
                   self._controller._last_wake_up_time[self.id()] >
                   self._controller.update_interval))
docs: Return whether the data is from an online vehicle.