In the instrument display show cars in the relative position around you, especially in the blindspots.
Moderator: An early prototype autopilot display did this. No idea why it was changed, but it might be the display got too busy and/or cars might appear/disappear when they are on the threshold of detection.
I don't know why the side view mirrors don't contain a visual warning light to inform the driver when it's safe/unsafe to change lanes. This should be federal law. For a car company that prides itself on safety, this is a major oversight in my opinion.
The cars on the side are hard to detect with current display on my 2017 S Tesla. Adding a picture of car on side would help. My other cars show a warning light on the side mirrors and even this would help driving the Tesla. The warning shown on the Tesla dash is very poor!