A second day of filming at Snetterton race track saw more crowds turn up to catch a glimpse of film director Ron Howard shooting scenes for his new movie.

The film is based on the story of Formula One legend James Hunt, pictured below, during his racing heyday, and the director has urged people to visit the set and see classic racing cars from the 1970s.

Our iwitness24 users have been on the set and Jon Grainger and Damon Bevan have shared some fantastic photographs of the cars.

The film director, who made his name as teenager Richie Cunningham in the US sitcom Happy Days, even came over to talk to spectators yesterday morning.

The film, called Rush, focuses on the epic rivalry between Hunt, played by Chris Hemsworth, and Niki Lauda, played by Daniel Bruhl, in the 1976 F1 season.

Hunt ultimately won the world driver's championship at the season's final race in Japan.

The rain on that day played a leading role in the race.

Howard, who has directed films including the Academy Award-winning Cocoon, Apollo 13, How the Grinch Stole Christmas, A Beautiful Mind and the Da Vinci Code, said the acting scenes for the movie had already been completed.

So now all the focus is on the racing cars themselves – including Hunt's McLaren, Lauda's Ferrari and Norfolk's own iconic John Player Lotus.

'We're dedicating the last portion of the production to recreating these very intense scenes,' said Mr Howard.

'What we're doing is using different corners and sections to replicate tracks that we either can't get to, or have changed so much that we need to do things to make them historically accurate.

'We were able to find a lot of that at Snetterton and that's why we're here for a couple of days of shooting, including a day of full work with the actual historic Formula 1 cars.'

Many people found out about the filming from Howard's Twitter account on which he urged people to come and watch and dress in 1970s-style.

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Did you speak to Mr Howard? If you did, what did he say? Call reporter David Bale on 01603 772427 or alternatively email david.bale2@archant.co.uk.