I mean, look at the concept it has such a literal resemblance to the most inconvenient Apple product-the Apple Mouse. But, the difference is that it has wheels. And it has NO WINDOWS, they say that they'll use VR Tech to like show surroundings or simply, the inside's a big glass dome and the outside is just cameras.
They started developing their first car in 2014. That's a long time ago not gonna lie. And there were patents by Apple for this design (at least related to).
Apple previously filed a patent with the United States Patent & Trademark Office for an in-car VR entertainment system that utilizes the motion of the vehicle to further immerse passengers in their in-headset experiences. VR content is synchronized with the movement and acceleration of the autonomous vehicle as it travels to the desired location, offering a unique location-based experience that changes based on your commute. So basically my guess was kind of right. There maybe cameras, I don't know or maybe it's GPS based VR-Movies of some sort.
Well I'll have to wait another lifetime for that maybe so yeah that's it.