Stewart had some success in other forms of racing during the year, winning the 1966 Rothmans 12 Hour International Sports Car Race and almost winning the Indianapolis 500 on his first attempt, in John Mecom's Lola T90-Ford, only to be denied by a broken scavenge pump while leading by over a lap with eight laps to go. However, Stewart's performance, having had the race fully in hand, sidelined only by mechanical failure, won him Rookie of the Year honours despite the winner, Graham Hill, also being an Indianapolis rookie. Stewart appeared at 24 Hours of Le Mans test day on 3 April 1966 driving a Ford GT40 Mk II version of Holman &amp; Moody and the Ford GT40 owned by Alan Mann Racing.