Mercedes' Lewis Hamilton and Ferrari's Sebastian Vettel take part in a revealing interview with BBC Sport's Lee McKenzie. br br The pair, who qualified 1st and 2nd for the Bahrain Grand Prix, reminisce about their first meeting whilst driving in Formula 3. br br Answering a question about his rivalry with fellow Mercedes driver Nico Rosberg, current world champion Hamilton says that "there is no friendship between two team-mates.