I want to build a better city, a city where I can walk where I want without having to watch out for traffic, a city where I can drive where I need to without having to watch out for pedestrians. Mixing pedestrian and vehicles is a bad idea, but this is the way we have been doing things for years, and changing it is going to take some doing.
The primary idea is that pedestrian traffic would be separated from vehicular traffic. One way to do this would be to have separate levels for pedestrians and vehicles. Relegate all motor vehicles to the ground level, and build a level above that for pedestrians.
Medium old, white male. 30 years mucking about with computers. Wife, children, house, everything. The full catastrophe.