According to IndyCar.com:
Through its third year, Hallman said the decision to play host to the series “in NASCAR country” has delivered positives all around. The 2012 event drew ticket-buyers from 42 states and six countries, and the promoter announced a three-day attendance of 81,378.
The venue offers grandstands and stadium-style seating on lush lawns, and 52,879 were watching the 90-lap race. The INDYCAR Fan Village with interactive displays from commercial partners was augmented by a Ferris wheel from the late Michael Jackson's Neverland Ranch, inflatables and more for familes.
Nice crowd isn´t?