After Christian Horner’s exit at Red Bull, what are the main questions facing the team and new boss Laurent Mekies

Christian Horner, the longest-tenured team principal in Formula 1, is out after two decades. Here's what he told the team.

Laurent Mekies, the boss of sister team Racing Bulls, will replace Horner, who has been with the team since its inception in 2005 and led it to 124 wins and numerous championships.