Problem: You have built a time machine and have decided to travel back to 1940 to the city of Los Angeles (Core Case Study) to talk with city leaders about air pollution and how to deal with it. You will be informing them of some things they are not aware of, including the connection between car exhaust and smog. What could be a strategy for preventing a long-term buildup of air pollutants over LA and give your three strongest arguments for adopting your strategy.