In 1966, along with American racing drivers Phil Hill, Richie Ginther and Carroll Shelby, he was racing advisor to the 1966 motor racing epic "Grand Prix" starring James Garner. All the aforementioned (including Garner, who did all his own driving) were employed as drivers for the racing scenes. While filming the 1966 Belgian Grand Prix at the notorious and extremely fast Spa-Francorchamps circuit, Bonnier, along with more than half the field including Jackie Stewart, Bob Bondurant, Graham Hill and Denny Hulme, crashed out on the first lap of the race. According to Phil Hill, Bonnier went through an upstairs window at a house next to the track and could not take part in the later filming on the circuit.