The Ad clearly says Saturday nights under the lights, so I guess that would rule out Road America. My guess would be Slinger or maybe Plover if they were staying on asphalt. The Milwaukee mile has been nothing but financial troubles for years. My office is less than a mile from that track and I can't tell you the last time I heard a car running around that place, although I guess the ARCA Menards Series is supposed to be coming back for 2021? If dirt I would say Beaver Dam, I know smoke has come and raced there several times in the past.