It seems like vehicles will have to go through an "unsafe valley"[0] where there's a huge gulf between "does a couple of things really well" and "go to sleep an

It seems like vehicles will have to go through an "unsafe valley"[0] where there's a huge gulf between "does a couple of things really well" and "go to sleep and you'll arrive safely at your destination". [0] Not the same, but it's a bit analogous to http://en.wikipedia.org/wiki/Uncanny_valley http://en.wikipedia.org/wiki/Uncanny_valley