[buzzerbetrayed]

Because cars?

[crooked-v]

Because only cars, and treating everything else as an afterthought.

[timeon]

Those videos show suburbia with huge roads - that does not sound like 'City'.

[db48x]

Eh. What they really show is a tech demo. It has simple houses and stores instead of a single apartment building with both in them because it needs to test the path finding and traffic simulation. It also needs to test the agent simulation, where each agent goes somewhere that satisfies a need. If everything were in a single building then there would be no way to find bugs in those systems.