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F1 Hunt Lauda rivalry in Peter Morgan and Ron Howard film

1 September 2013 Last updated at 14:22 BST

Hollywood director Ron Howard and scriptwriter Peter Morgan have teamed up for the film Rush looking at the famous rivalry of Formula One racing icons James Hunt and Niki Lauda in the 1970s.

The pair, who worked together on Frost/Nixon, spoke to Andrew Marr about their latest film.

More on the BBC Andrew Marr website, or follow us on twitter.

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