Earlier quoted context omitted.
Harder yet, Southeast Asia. Hundreds of pedestrians, tons of vehicle variety (some entirely makeshift), uncontrolled intersections, very little regard to any regulations.
In my mind structured road conditions are a prerequisite for driverless cars. I've been in many situations where conservative driving according to the rules of the road is not possible. In the West this is more limited to dense cities and exceptional situations. In India, though, this is the rule. If you waited for pedestrians to finish crossing or for cars to clear intersections, maintained a safe following distance…
There's no such thing as "Structured Road Conditions" anywhere in the world. Whether it's the ice storms of the Northeast US, radar interference, one lane two-way roads, potholes that can devour a wheel or roads that turn into mud -- the analog world is a harsh and unrealistic place for a technology that has never made its way out of cherry-picked municipalities in ideal conditions.
The last chapter is not city driving. It's the first chapter. So far Google has tackled only the lowest hanging fruit.