Describe a futuristic city where all transportation is done via flying vehicles powered by renewable energy sources

Describe a futuristic city where all transportation is done via flying vehicles powered by renewable energy sources. The buildings are all equipped with vertical gardens and green roofs, and the streets are lined with trees and plants. The city is completely self-sustaining, with all waste being recycled and reused for energy production. The inhabitants of the city live in harmony with nature, using advanced technology to minimize their impact on the environment. Life in this city is peaceful and harmonious, with a focus on sustainability and conservation.