2008: Returning for his third Indy 500, Marco posted the fastest practice speed of the month, 228.318 mph, the morning of pole day time trials. Initially a favorite for the front row, his qualifying effort, however, was a visibly disappointing 7th. On race day, Marco was a strong contender, and led in the second half, but was not without incident. On the 106th lap, Marco was battling for second and dove under teammate Tony Kanaan in the third turn. The move unsettled Kanaan's car, and Kanaan slid high and into the wall, then collected the car of Sarah Fisher. Marco was immediately blamed for the crash. While running second on lap 156, Marco pitted and the crew made a "trim" adjustment of his rear wing. The change shuffled him back to 4th, and rendered him uncompetitive for the final few laps. Marco settled for 3rd place.