I don’t buy that a HUD showing Social Media interactions is meaningfully less distracting than them on a phone; the problem is not so much “it’s on a screen!” as “it’s completely unrelated to driving and commands too much attention to process and more importantly RESPOND to”.
What I want it to display is a representation of all the other cars around me , with a car in the center representing my car. Cars will be color coded depending on if they are moving towards me, or away from me (red shift or blue shift). Adjustable detection distance. Showing pedestrians would be nice as well.