Recently I accidentally changed lanes in an intersection. The road had 3 lanes in each direction (+ separate streetcar tracks down the center), including the right lane which was required to turn. I was in the center lane. After the intersection the road was still a 3 lane road - which didn't quite register on my brain. I moved from the center lane to the right lane (figuring it exited so I was supposed to be in the now-right lane) when I should have remained in the center lane.

While I am a novice driver, I've gone through that intersection before without blinking or doing the wrong thing. It's not a particularly complicated intersection.

Anyways, point is, driving is surprisingly hard. I think counting anecdotes on the internet probably gives you a sample heavily biased against Tesla, because most people don't go post "so I did this stupid thing" but they do post "so my car did this stupid thing".