The Apple Watch is an iphone accessory, as is the AirPods.I don't like that Apple is trying to be in every business that it can be. I want them to just focus on making the best computers. The phone, watch, tablet - these are all computing devices. Why does Apple need to make hardware that has nothing to do with computers? I know there will probably be some kind of computer in the car, but it's not really the same thing.
Same thing with HomePod, like I just don't see why they need to be making that when there are several other companies they could partner with on design who make the exact same product. Apple fans will tell you that the HomePod is the best smart speaker they have every owned or whatever, but everyone knows there is really nothing unique about the product, it's just a good rendition of the same thing made by several other companies such as Sonos, Bose, JBL, etc. I understand some projects like AirPods - since they are so essential to using the iPhone that it would feel strange of Apple didn't have their own product in that line.
Come to think of it - a car would certainly make for the ultimate iPhone accessory.