Jon & Steve discuss the project in Saudi Arabia which aims to build a completely new city that's 170km in a straight line.

The Line claims a city of a million residents with a length of 170km that preserves 95% of nature, zero cars, zero streets, and zero carbon emissions. It's quite the project, but what are the pros and cons of something like this? What about cities that already exist? This is basically all cities, so how can they achieve something of this quality without a total redo?