Tesla even has an entire fleet of people whose sole job has been to look at pictures the cars couldn't categorize, and tell the car what it was.
At this point, it's only odd or strange things on roads, but it's funny to hear stories from the engineers. An unidentified ball turned out to be a bowling ball, because the car recognized it wasn't a volleyball, kickball, basketball, etc. So, because it wasn't recognized, the human had to identify it. And it's not just identification - the car then stores knowledge about how that object behaves differently than other objects. There are entire youtube channels dedicated to these topics by the engineers and former employees.
Your garage door opener truck sometimes stops when something is in its way. Or it can see paint lines...sometimes.
Meanwhile, the most powerful neural network can keep it on a snow-covered dirt road in a strange city and recognize objects and animals by specific kind, and expect behavior based on what it is.