I thought Google's Street View cars couldn't drive very fast to be able to take those pictures. When not driving at full speed, it's not really a good learning set. Also the link says they get to "know every road by definition", but you could read that almost entirely from TomTom's maps as well. Roads change, weather conditions change, etc. I'm not so sure Google really uses their Street View car data for their self-…
'Know' here doesn't mean just knowing the road as in a map. OP meant 'know' (I presume) in the sense that: the data on how the street view driver drove through that road and under what conditions (including weather, traffic, et al.) is learnt by the machine learning algorithm.