HUD was first introd on a BMW M5 back in 04-05 time frame I believe. Only displayed speed and RPMs I think.
Any sort of distraction being radio console, phones or something in the windshield is a distraction and should not be allowed in cars period. Humans have prevent time and time again that we are not competent to multi task and drive at the same time. Technology is a kewl thing, however for driving, people need to be focused on driving, and there surroundings. Leave all the other stuff to passengers when they are riding or pull over if your alone or people just need to find patience and wait till they arrive. People are so impatient. My 2 cents.