[SideburnsOfDoom]

Yep. To take a step back, the whole point of tarmac roads is that they are designed to be easy to drive on compared to cross country, footpaths, goat-tracks, wagon-trails etc. It's not hard to see a tipping point where roads are designed for robot cars not human-driven ones.

Also economies of scale take over. If 100 robot cars an hour drive down a road, the details of it can and should be mapped in real time and shared among the robots.

[toomuchtodo]

Google has almost 1 million miles on the road with its self-driving cars. I would be shocked if they don't add or improve their mapping data with each mile those vehicles travel.

[jinushaun]

I'm guessing that's how the new version of Google Maps is able to tell me which lane to be in.