Unfortunately, the 23 October autocross has been cancelled due to conflicts with the track.

From NCM:

This event has been cancelled due to a conflicting event at Beech Bend Raceway and unavailability of the autocross site. We apologize for the inconvenience and all pre-registered participants will receive full refunds. The special Camaro Exhibit will be here at the Museum until the end of December, and Bumblebee will be on display October 19-27.