I did my specialization in robotics and although fully automated vehicles were far from my research area but nevertheless I had some exposure to them - technically speaking. The truth is that many labs and companies have fully functional and completely automated prototypes.

Although there is a bit of debate as to the capabilities of these prototypes. Some engineers are claiming the automation is 100% functional and yet we are seeing that no big names have yet come forward to bring the technology to the people. To me this indicates that a few problems still exist.

Then there is also the issue of commercialization of these designs. The differences in international norms can also be a hindrance to a full scale internationally accepted parameters.

Lets not take all the above as a sign of failure, we never know what might happen in five years :-)