Pretty much. All the summon-a-robocar with an app in 5-10 years predictions seem to merrily ignore all the edge cases having to do with weather, direct driver interactions (e.g waving someone out into traffic), construction, parking in unmarked spaces, etc., etc. I have little doubt that autonomous highway driving for example is both achievable and desirable but a lot of folks extrapolate that to the more general case which is much, much harder.