Senna , the nephew of three-time world champion Ayrton Senna , joined the British-based team as a test driver in July and has yet to race competitively for the marque . Nick Heidfeld will replace Bruno Senna for the Belgian Grand Prix at the Belgian Grand Prix . Bruno is the nephew of late Nick Heidfeld legend Ayrton Senna . The Brazilian has not raced since the final grand prix of July .
Nick Heidfeld will replace Bruno Senna for the Belgian Grand Prix at the Belgian Grand Prix . Bruno is the nephew of late Nick Heidfeld legend Ayrton Senna . The Brazilian has not raced since the final grand prix of July .