Cant think of one tbh. Unless its completely inconsequntial the vast majority of car options aren't fitted unless it was specified. wheels, brakes, suspension, exterior options, safety stuff which relies on cameras, reverse cams and sensors, upgraded interiors, climate upgrades....... just seems like a cash grab if they've fitted the hardware and just havent enabled a flag in the software. i mean wheres the extra value, its stupid. why not just give it away.
Audio system again wouldnt be something you could upgrade, unless they fitted better amps, better and additional speakers and sub; and then coded it to make it sound crap so they could sell you the upgrade. That would be completely retarded.
All these attempts to consider expensive physical items the same as a piece of software is beyond stupid. Wouldn't you think it stupid if you bought a house with heating, but you couldnt turn it on unless you bought the extra unlock code....
when will people start hacking teslas then....