McLaren has shown off the 'secret weapon' it will debut in the Singapore Grand Prix later this month.

With the event being the first Formula One race to run at night, the MP4-23s of Lewis Hamilton and Heikki Kovalainen will be fitted with a new aerodynamic feature for the weekend in an effort to give the pair an advantage over their rivals.

In this video, McLaren CEO Martin Whitmarsh reveals the secret, whilst also looking forward to the challenge that Singapore will provide...