How did police officers manage the crowd?
Were there laws in place that governed where a race could take place?
Were the drivers of the cars wearing seatbelts? Was that a law yet?
How was the fuel used in the 1930s different from the fuel we use today? Did the people at the time worry about pollution or damage to the environment?
Did the drivers have to have special licenses?
How tall are the barricades to protect the crowd? Did they adequately protect the viewers?
Were there accidents at these car races? Did that cause the government to make new laws?