The halo is a safety device designed to protect the driver in the event of a rollover or in case of impact with a barrier or a lifting device as was unfortunately the case for Jules Bianchi in Japan in 2014.
Being a safety feature, teams are not allowed to modify it and add aerodynamic elements above it, unless it is a part connected to the bodywork. This is where Ferrari came up with a clever and never-before-seen idea in Bahrain. A miniature airplane-like tail fin connected to the engine cover by an arc.
This mini spoiler may not necessarily be used on the track for the Grand Prix next week.
