Notes:
1 Points include 1 point for leading at least 1 lap during a race, an additional 2 points for leading the most race laps. For Detroit only, 1 bonus point was awarded to the fastest qualifier from both groups.
Notes:
1 Points include 1 point for leading at least 1 lap during a race, an additional 2 points for leading the most race laps. For Detroit only, 1 bonus point was awarded to the fastest qualifier from both groups.