I know plenty about Lidar. Did not argue that it was not old or did not exist.  Elon thinks it is overkill.  Do I want to believe you after having watched his presentation and having driven the car or you?  Hmmm  Am I imagining my last road trip?  
 

Besides you point has nothing to do with what I said  - which was that Tesla knows a bit more than all of us about what it will take to implement self driving at this point  

Do watch the YouTube video presented to investors last year detailing some of the tech Tesla used. I think it was called autonomy day or something. Next one is battery day in a few weeks.