[tstegart]

You could think about it this way: the mechanical parts of cars are all the same-ish (and Apple is planning on them being commodities). So when self-driving cars show up, the only thing to differentiate them will be the software, and Apple is planning on controlling it.

If you hop in a self-driving car, then hop out at your destination, the only parts you have connection with is the seating and the software.