I've seen it, it can do this. I've seen it first-hand navigate it's way around the Google campus, go into a left turn lane, turn left into one of the Google buildings. The entrance has a prominent bump, and the car slowed down so as not to hit it hard.

Of course, it may have been pre-programmed, but I don't believe so. What I don't think it can yet do is navigate arbitrary systems like drive-thrus.