Hemsworth, star of Star Trek, Thor and the forthcoming Cabin in the Woods, looks uncannily like Hunt in the first stills from the film, called Rush, and planned for release next year.
Hunt's life story was made for the big screen treatment - world motor racing champion at 29, dead at 45 with gallons of champagne, beautiful women and millions of fans around the world in between.
Hemsworth is leading a less hectic life than Hunt. Despite his Hollywood star rapidly rising over the last year, the only champagne corks flying around have been for the news that his wife Elsa is expecting their first child in a few months.
Brushes with mega-celebrity and paparazzi attention have not completely passed him by, however. The couple recently holidayed with Matt Damon and his wife, and Hemsworth's younger brother Liam is the boyfriend of one-teenager media-fireball Miley Cyrus.
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