Prince Naruhisa KITASIRAKAWANOMIYA learned driving during his stay in France and went for a drive with Prince Naruhiko, saying 'I want Prince Naruhiko to check out my driving skill,' however, as his skill was untrustworthy, Prince Naruhiko said to him that 'As you are not yet a good driver, you should refrain from driving.'
北白川宮成久王は滞仏中に運転を覚え、「一度、稔彦王に腕前を見てほしい」とのことで一緒にドライブに行ったが、成久王の腕前は怪しく「あなたはまだ危ないからおやめなさい。