Came across this earlier today. Good introduction to PID in the context of a self-driving car.
As someone who was spent hours on end looking at PIDs until I barely grasped the concept, THANK YOU! 
Thank you for posting this. After years upon years of trying to teach new programmers about the basics and PID, they never had a clue about what PID was for and couldn’t visualize it. One of the programmers that took my spot on the team after I became an alumni was one of them. After he watched this video, he instantly got it. I think most people have to see and hear a little short about PID to get what it’s trying to convey.