What kind of gestures will Google's self driving car make?

Google has been working on ways to make its vehicle fit into current road conditions safely. It was granted a patent last week in which it outlined how a driverless car could interact with a pedestrian through a flashing sign on its doors and bumper as well as a robotic hand to make gestures.
end quote from:
http://www.cnbc.com/2015/12/02/how-google-driverless-cars-deal-with-emergencies.html

I just couldn't help myself and began to laugh when I read this segment. I could only imagine some of the gestures I have already seen drivers make during the last 50 years or more I have been driving with a license since I was 15 1/2 years old when I first got my learner's permit in 1963.