Lewis Hamilton and his long-time Mercedes engineer Pete Bonnington shared a final lap around the track together ahead of the Formula 1 racer's departure for Ferrari . Hamilton left 'Bono' sweating and swearing in the passenger seat around Yas Marina Circuit. The Mercedes head of race engineering labelled the lap 'one last time'. The duo were left in tears in the aftermath of their final grand prix together on Sunday as Hamilton finished an impressive fourth place after starting in 16th for the