One big challenge with this is that the human eye has not followed all the technological advances… Its still gonna give you shit after the age of 40. So that means you cannot have a simple mirror reflection system where the driver simply focuses on stuff outside of the car and then from time to time onto the HUD. But I think Mamazon and the apple companies have figure either automated focusing or long distance focusing such that the eye doesn’t have to focus on shit up close while driving. So it’s totally doable.