I agree, but I don't think that's actually going to replace cars and it doesn't serve everyone, such as the people who live far outside cities.
whether we have a world of 3 billion cars (doubling) or a world of 750 million cars (halving) in 2050, they all need to be electric.
Hell, I think we'd get flying cars first. It's nearly impossible to touch anything that requires modifying suburbs or their streets, politically.
If you're trying to expand the market of a company with such a broad reach already there aren't many markets big enough to move the needle on revenue. Real-estate, food, fashion and automotive are the only ones really significant enough to tackle, and of those, automotive isn't an unreasonable one to explore.
Unless you want a literal Apple Home.