These are the types of steps I'm guessing we'll see over the next few years towards driverless cars. It's not difficult to imagine these incremental changes becoming more and more frequent as companies compete in this space.
One thing that strikes me as interesting is the possibility for software upgrades in your car to enable more (automated driving) features. Once all of the hardware is in place it seems like a natural progression.
Who's to say that the hardware won't plateau well ahead of social norms, legislation, and software and that we won't end up with an awkward period of automated-ready cars?