If the story holds, I think it is interesting to know more details about why Tesla has chosen Ubuntu server as the underlying OS and nothing else?

I can see that ubuntu server has proven itself in a lot of real-world environments, but wouldn't they have to run their own fork of Ubuntu at some point? Or is the distro management toolchain in the Ubuntu world more advanced than for example some bsd or centos?

Edit: I am talking about the output on this screenshot: https://4.bp.blogspot.com/-e08E6tXwQvc/VwSTUbXgFDI/AAAAAAAAA...