Each turn is one month, and the game lasts approximately 100 years. At the start of each month, the player is presented with a money ledger showing the prior month's business. At this time newspapers also announce if cars are doing well or if there are special world events. World events that vastly effect gameplay are: World War I, The Great Depression, World War II, and the energy crisis of the 1970s. Most of these events negatively affect demand for all cars, with the exception of the energy crisis which targets low-mileage vehicles.