Some cars have scored more victories. Others have had longer careers. But few - if any - can match the impact of Porsche's first Le Mans 24 Hours winner, the 917.
Being the greatest in anything means more than just numbers. How do people feel about something? How did it move the game on? Does it still stop people in their tracks?
The 917 wasn't just a milestone car for Porsche, it was a seminal machine for motorsport.
Kevin Turner has been the editor of Autosport magazine since 2016, having previously been the editor of sister publication Motorsport News. He joined the magazine in '06 after writing club race reports as a freelancer while studying history at the University of York. He has also covered international events for both the magazine and the website, including the Le Mans 24 Hours.
Kevin covered the British Touring Car Championship from 2011 to '14 and has a keen interest in the historic racing scene. He lives in Fleet with his wife and two children.
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