Saudi says The Line will be the world's first 'eco-city.' Construction and design specialists aren't so sure.

Neom

• 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...