Prohibition era disposal of illegal alcohol confiscated by the government. Alcohol played a major role in Fitzgerald's life; he was an alcoholic and likely died so young due to the effect his addiction had on his health.
There is not a fast car in the frame, but how can you doubt that they had one? Sisters Guarding Family Moonshine Business -- Florence Friermuth and Susie Friermuth Doffing pose after they were arrested for moonshining. The sisters guarded stills on their family's farm near Saint Paul, Minnesota, during Prohibition.