Multi 21. The code, transmitted from Red Bull's pit wall to both of their cars with a few laps remaining in the 2013 Malaysian Grand Prix, was clear enough. It meant: maintain positions, car 2 stays ahead of car 1. Car 2 was Mark Webber. Car 1 was Sebastian Vettel. Webber was leading. The race order was to be preserved.
Vettel had been closing on Webber through the final stint, the championship context — it was only the second race of the year — suggesting that the logical, conservative response was to accept the instruction and bank the points as a Red Bull one-two. Webber had backed off, managing his pace and his tyres in the belief that his teammate would respect the arrangement. It was not the first time such instructions had been given by the team. It had not always been followed before.
On the final laps, Vettel attacked. He drove to the outside of Webber at Turn 4, a committed, fast move that left Webber with no room to defend without risk of contact. Webber lifted. Vettel was through and building a gap. On the radio, the team tried to communicate. Vettel acknowledged and kept going. He crossed the finish line first.
The podium was extraordinary in its awkwardness. Vettel sprayed champagne and received his trophy while Webber, beside him, conveyed with the minimum possible movement and expression the full extent of what he thought of what had just happened. 'Not bad for a number two driver,' Webber said afterwards — a line that landed with precision and was repeated for years. Vettel offered an apology that was partial, framed in terms of the heat of competition and the difficulty of stopping when in pursuit mode. The apology was not accepted. The atmosphere within Red Bull, already complicated, became more so. By the end of 2013, Webber had left to race in sportscars.