- Saudi Arabia wants The Line to be a high-tech "eco-city."
- Officials say the city will have no cars or emissions and run on 100% renewable energy.
- However, architects and other experts have questioned its sustainability and ecological impact.
Neom's flagship city, known as The Line, has grand plans to be a futuristic "eco-city."
Officials say the linear city will be built between two giant mirrored skyscrapers, each 1640 feet high and 656 feet apart, and be free of roads, cars, and emissions.