There used to be a complete underground railroad under Los Angeles that was used for a train that went everywhere! The film showed the parking spaces, and later for speakeasies where people would gather to talk and drink. he speakeasies were popular in the 20s and 30s . The police handled the action, which in 1929 was $30,ooo,ooo! It was said the police protected the action.
General Motors and Firestone Tires bought the tunnels and dismantled them.
they convinced the public that it would be cooler to buy a car and drive to the suburbs!