> As more critical functionality in cars comes to be controlled by MCU/CPUs and software over ECUs and mechanical components, I wonder if software obsolescence

> As more critical functionality in cars comes to be controlled by MCU/CPUs and software over ECUs and mechanical components, I wonder if software obsolescence will have a larger impact than potential chip failure from increased use. I don't really see that. Once the software's out there and works, it'll work even if it isn't updated with the latest feature set. I can't really imagine the government changing self-driving car standards so fast that a non-updated car could not operate safely and would have to be retired. Any broken "cloud server dependence" would probably cause so much weeping and gnashing of teeth that Tesla would be foolish to try it, and again, I doubt the government would allow it for safety reasons.