according to reports on this project, the google car needs google maps. Also most states that allow this require a licensed driver who can take over instantly. Hard to do without brakes or human steering.
Yes the google car requires google map. And any self driving car will need somebody’s map (else it can’t know where it is), but GPS are basically standard equipment now so that’s solved. Most states currently require a licensed driver, emphasis on “currently”. CA is already working on the tweaks and as the tech spreads away from Silicone Valley other states will follow.