The helmet design that James Garner's character uses is often confused with that of then-Grand Prix race driver Chris Amon from New Zealand. The main difference is that the blue and red colours are reversed. Furthermore, Amon's helmet had a silhouette of a Kiwi bird on the side of it, while Garner's did not. Brian Bedford's character Stoddard used a helmet design that was the same as that of real life 1966 BRM driver Jackie Stewart. As Bedford couldn't drive, this was done so that they could shoot footage of Stewart driving the BRM (with a balaclava over his face to hide that it wasn't Bedford driving) and pass it off as Stoddard. Sarti's helmet was Surtees', and Barlini's was Bandini's.