The document discusses how cities of the future may develop based on current population and economic trends. It envisions that as global population reaches 9 billion, cities will have higher density with more efficient transport like electric cars and trains, as well as more vertical buildings that can be self-sufficient. Most office work will be done remotely using virtual reality to reduce transport needs. Megacities constructed by large companies will provide living and work areas for employees. Future cities will also be more multicultural and focus on addressing global issues like climate change.