Table:
text: 2007 Iowa Corn Indy 250
Classification
Classification
Fin_Pos Car_No_ Driver Team Laps Time_Retired Grid Laps_Led Points
18 23 Milka Duno (R) SAMAX Motorsport 60 Handling 19 0 12
19 2 Tomas Scheckter Vision Racing 0 Accident 14 0 12
Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers Lead changes: 13 between 8 drivers

Question: Which laps have a lead change: 13 between 8 drivers for 2007 Iowa Corn Indy 250?