Well, not sure where you read I drive close to anyone. What I'm trying to say is that erratic drivers are dangerous because you learn to predict what a normal driver would do in a typical situation (e.g. jogger too close to the lane => slow down to a safe speed and navigate towards the center).
If a self driving car doesn't reproduce the most common driving style the other drivers should be extra careful around it, some kind of mark on the outside could help.