The Mercedes cars drove onto the track with very slim sidepods on Thursday during the first Formula 1 test day in Bahrain. That provoked reactions from Red Bull Racing team boss Christian Horner, among others. NU.nl reporter Joost Nederpelt explains what is clever about the sidepods and what happened to Horner.
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Videos | First riot of the F1 season: what’s with Mercedes’ sidepods?
