The Belgian race weekend started with a bang for Renault when the team announced Nick Heidfeld was to be replaced by third driver Bruno Senna. But the move already seems to have paid off with both cars making it through to Q3 in qualifying and Senna managing to outperform more experienced team mate Vitaly Petrov. We caught up with Petrov to find out his thoughts on Senna’s arrival and the R31′s improving performance