By Patrick Stephan Race specifics from INDYCAR: IOWA INDYCAR 250s RACE SPECIFICS • The race is 250 laps, 218.75 miles on 0.894-mile oval. • The pit road speed limit is 60 mph. • The green flag to start the race will be shown the fourth time by the start-finish line. • The Speedway E85R ethanol…

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