As someone who drives a car with adaptive cruise control, that's awesome. My car leaves a safe following distance and sometimes people behind me expect me to react to their tailgaiting or aggression. Having an indicator that clearly indicates the car is driving automatically should reduce aggressive driving over time.

Also I worry sometimes that other drivers will think I'm boxing them in, but it's only the car leaving a safe following distance and is completely automatic. I want to say.... "It's the automated driving function" to those people.