I like the Mercedes idea, but haven't seen it in practice yet. It would be useful to have a universal outside light that informs drivers behind you that the r

I like the Mercedes idea, but haven't seen it in practice yet. It would be useful to have a universal outside light that informs drivers behind you that the reason you're keeping a safe distance ahead is that the car is on adaptive cruise control. Some people feel like 2 seconds distance is a reason to try crazy stunts to get around you. And then once the road is clear drive slower in front of you than the speed you had set...