Enlarge / An example of what the Mercedes-Benz augmented reality HUD looks like in action. You can see here it's showing the driver they need to take a left turn. (credit: Mercedes-Benz) When Audi briefed Ars on its newest electric car, the part that most piqued our interest was the news that the Q4 e-tron Sportback will feature an augmented reality heads-up display.