The story of the 1975 Formula One World Championship – and the rivalry cum friendship between Niki Lauda and James Hunt that lies at its core ­– is one step closer to making its Hollywood splash.

Mercedes team principal Toto Wolff recalled an emotional memory of his "friendship" with former three-time F1 world champion Niki Lauda. The Austrian, who had raced in the sport in the 70s and 80s ...