Formula One will undergo a series of changes for the 2009 season, with the cars launched to date showing a radically different look to those raced in 2008.

As well as the visual appearance of the machines, 2009 will see the return of slick tyres, the introduction of KERS, and changes in engine regulations that will leave teams needing to make each engine last longer during the year.

This video sees Sebastian Vettel talk through the main changes, with some help from the video wizards at Red Bull...

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