I think it's always best to avoid comparing neural nets with biological neurones and their networks. The comparison just doesn't hold since they are completely different in almost every way.

Also I think that it actually proves that humans use their general intelligence to drive, since Humans can learn on the go and add almost any type of new knowledge and act upon it without even realizing it. The brain is not looking for anything in particular, just any type of information that would be relevant to driving.