 Complete the following phrase:  The race restarted on lap 13, before Tony Stewart took the lead on lap 17. A competition caution was planned upon the completion of lap 20, but the second caution of the race flew on lap 20 for a multi-car wreck in the tri-oval. A total of 16 cars were involved, including points leader Jeff Gordon, defending race winner Jimmie Johnson and Dale Earnhardt, Jr., the 