Wow, that never happened to me and is unacceptable. Was that for the infotainment only or the drive train? Just for others, they are separate systems, you can even safely reboot the infotainment (main display with maps, music etc) if you need to while driving, as it doesn't affect the drive train. I'm guessing it was not the drive train which would be incredibly dangerous.
Yeah, it didn't affect the drive train, and it was also quite quick - less than a minute between when the screen went dark and when it had finished rebooting and sent notifications that an update had been installed. So presumably just an infotainment update as you said; I didn't try to dig into exactly what the update included though.
