The Line is an emissions-free smart city in the works as a part of Saudi Arabia’s larger Neom mega-city project. The city is meant to run solely on renewable energy and if built according to plan will measure 170 kilometers (105 miles) long. | Mashable

Saudi Arabia plans to create a futuristic city called The Line. | Hashem Al-Ghaili

Saudi Arabia is constructing NEOM, a $500 billion futuristic city project, featuring “The Line”—a car-free, ultra-dense urban corridor designed around sustainability. The city aims to redefine urban living by eliminating roads, cars, and emissions. Key Facts: • Project cost estimated at $500 billion • “The Line” stretches 170 km • Completely car-free and road-free • Powered entirely by renewable energy • Uses around 20% of the world’s steel supply • Vertical mirrored architecture • Part of Saudi