in 1967, Sept 25th, the ATF shut down the Middle Georgia Raceway, because there was a moonshine still under the track

 and a fake ticket booth was just past turn 3, hiding a trap door that opened the access to a ladder, which led to a 125' long tunnel that went to a couple of tanks. 

a 2000 gallon cooker, a 1200 gallon fermentation, and a 750 gallon gas tank to heat it up

and they made around 200 gallons of shine a week

learned about this on Lost Speedways, season 1, episode 2