Comment by clock_tower

> It seems crazy, but there's also some appeal in the idea of opting out of all the legacy infrastructure. If we could rebuild our roads from scratch today to serve a vehicle for the 21st century, what would we build?

I don't know, but we did rebuild our roads from scratch to serve as a vehicle for the 20th century, and it was a disaster. Let's first fix the problems that the last attempt to start from zero created (read up on Robert Moses and Jane Jacobs), before trying to start from zero again.