I agree with the people saying that looking to the right for speed is no big deal, we'd get used to it. Where I think a HUD or other display is needed is for Autopilot information. Do we really think that autopilot will be good enough by next year that you will be able to completely trust it and have no visual indicator of what the car is seeing? What if you buy enhanced AP but not full autonomous? You're going to want to know if the car is reading the lane lines, if it's seeing that car that is swerving into your lane, if it sees that cyclist riding next to you, etc.