Three more F1 drivers were slated to take part: Henri Pescarolo in a Matra MS120 similar to that which he'd driven to third place in the 1970 Monaco Grand Prix, Tom Belsø in a Williams FW03 similar to his car from the 1974 Formula One season, and Danny Sullivan in a Lola Mk4. Neither would feature in the event; Sullivan's car was driven by American Howard Cherry.