Ron Howard's visceral new film "Rush," with screenplay by Peter Morgan, gets heart and center in the world of Formula 1, depicting one of the sport's greatest rivalries between British driver James Hunt (played by Chris Hemsworth) and legendary Niki Lauda (Daniel Brühl), during the international racetrack's golden and decadent age in the mid 70's. Film Journalist Katherine Tulich interviews director Ron Howard and the film's stars, Chris Hemsworth and Daniel Brühl.