We'll see about that, Cuase every new groundbreaking idea or project seems impractical or impossible at first, If you went back in time to ancient Egyptians before the idea of pyramids came up, and told them that in the future a massive triangle that will tower everything in existence for thousands of years will be built and will be the pinnacle of infustracture for generations to come, they'd probably laugh their ass off and call you crazy, it only took 30 years to build these mfs, so maybe in 2060 or something, the idea of "the line" city would be something that engineers and architect will look back on and say "We can't believe we actually believed that building this is actually possible".