This kid was named Xiao Shengyou, and his father, Xiao Jianguo, was the Deputy Director of the City Public Security Bureau. Relying on his father's power, Xiao was quite arrogant normally. Although he hadn't committed any major evil deeds, he bullied quite a few people, and whenever he caused any trouble, the people from the police stations and sub-bureaus would give face to his father and not make things difficult for him.
Moreover, Xiao Shengyou's mother was an extremely protective woman. As long as there was trouble, she would side with her son, which made Xiao even more fearless and reckless in his actions.
To him, hitting a taxi driver was a trivial matter that he hadn't taken to heart. Showing up at the police station was merely a formality to save the face of the station director and for those around to see so as to prevent too much public uproar, since the internet could be quite powerful these days.