Following his departure from Red Bull, Christian Horner shared a touching video on Instagram of a young fan named Teddy, who hailed him as his hero. In the video, Teddy reads a heartfelt letter expressing his admiration for Horner's impact on Formula 1 and Red Bull's success over the past two decades.

By sacking Christian Horner, Red Bull has made a big change to try to return to F1 winning ways. But there are other steps it must take, too