It looks like Lucas Oil Raceway Park didn't waste any time in getting this up on Facebook:
The USAC Hall of Fame Classic has been cancelled.
This event was an outside promoted event, by USAC. The decision to cancel this event was by USAC, not Lucas Oil Raceway. All questions should be forwarded to USAC at 317.247.5151.
https://www.facebook.com/permalink.p...72773642764282