Formula 1 drivers on challenge of Singapore circuit

Top names from the Formula 1 paddock, including Sebastian Vettel and Fernando Alonso, discuss the challenges of driving around Singapore's Marina Bay street circuit.

Force India's Paul Di Resta describes F1's only night race as "a special event", with Ferrari's championship leader Alonso, the only two-time winner at the track, discussing the physical and mental "stress" of taking on the 5.073km circuit in the humid conditions.

The 61-lap race on Sunday begins at 20:00 hours local time, which is eight hours ahead of GMT.

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