I recently read about the Chengdu Tianfu District Great City plan that won some awards for its innovation in sustainability. The city aims to be a satellite city, where cars can be parked but not used. The city is even designed to use wind in sustainable ways, meaning that the buildings are shaped to either harness wind or redirect it. The city is extremely dense and made for pedestrians, with multiple levels of streetscape and cars beneath the city. Its density allows the farmland outside of it to remain untouched. It's hard to find any evidence that the plans are actually being implemented, but the plan itself uses many smart technologies that I hope to be implemented where I live.