If the year were 2012, you could have a valid point. The iPad or the Apple Watch could have become new pillars for Apple.
We're now 11 years into the iPhone, and there's still no sign that Apple actually has a new product in the wings.
Many have tried and failed on the AR/VR front. What makes us think that that's where Apple is going to have their new smash hit? What makes us think it won't be another iPad or Apple Watch? Which isn't to suggest it would amount to nothing, but it wouldn't step out of the shadow of the iPhone. It wouldn't justify Apple's $1T value.
As for a car, I've been watching Tesla for several years now. There's a few takeaways:
#1 - Rolling out a 100% new car is slow.
#2 - Progress on car factories is very easy to track via satellite.
If Apple were going to dominate the car industry in 2030, they'd need to be where Tesla is today, with one brand new factory and 4 more under construction.