"<a href=""https://www.youtube.com/watch?v=ymcOLL2qEg8&amp;t=5m20s"">5:20</a> minutes of the video:  People are total assholes when they drive.  They will deliberately not let you in if you put on your blinker to change lanes or merge.  They will deliberately slow down if you slow down to come in behind them.  If you speed up to change lanes in the gap they will deliberately speed up.  I look forward to the day when people can't drive their car but a computer does it for them."