As much as I love Apple the ride won't last forever as no company is on top forever and the arrogance in this thread means it's really gonna hurt when Apple doesn't dominate.
I was only half joking! Apple has so much money it's not at all out of their reach to build a decent car and given their clout, given how many people with money would want Apple to build their phone, computer, watch, car and maybe house - it's not far fetched to imagine they will have a good start. Beyond that it's just a matter of them remaining invested in it. It will take a lot of undoing to come to a point where they don't dominate in one way or the other.