In October 1961, the final remaining brick sections of the track were paved over with asphalt, with the exception of a distinct three-foot-wide line of bricks at the start-finish line. The "Brickyard" thus became known for its "Yard of Bricks". After being widely ignored by Formula One drivers when it was an F1 World Championship event, a wave of F1 drivers went to the speedway in the 1960s, and the rear-engine revolution that was started by the Cooper F1 team changed the face of the 500 as well, with and world drivers' champion Jack Brabham of Australia qualifying his Cooper in 13th for the 1961 race. The Cooper used a smaller (2.7-liter) and less powerful Coventry Climax engine compared to the 4.4-liter Offy engines used by the other 32 cars and was slower on the straights, but many took note of the British car's superior handling through the turns. Brabham qualified 17th and after running as high as third, would ultimately finish ninth after completing all 200 laps. Despite this, many doubters claimed the rear-engine cars were for drivers who liked to be pushed around, though as Brabham said "It started the rear-engined revolution at Indy".