That's true, but how much oversight is really applied to the existing software systems on modern vehicles? Did national regulators review the design and coding on the electronic stability controls? I doubt it. Is the CAN bridge between the entertainment system and the critical systems bus (with ABS, ESC, power steering etc.) suitably hardened to protect against hackers (hint: no.) Who has reviewed the electrically assisted power steering?

Most things in a modern car are controlled by software that's far more opaque than OpenPilot. Don't get me wrong, a lot of their software and hardware architecture choices scare the heck out of me, but at least it's transparent.

That could be a way to describe all human drivers :P

I'm not sure what testing a regulator can do today that's more rigorous than the 10.5 million miles already driven by Open Pilot equipped cars.