I'm my wall of text above, I don't think I covered the electric generation in Japan.
Even with all their nuclear and hydro, I don't think the Japanese could meet the demand of a fully EV nation.
Software in a car is a funny thing. I was playing with the infotainment systems way back. And what we do on windows blue screening hard drives is still up-to-date today. Outside of spotify streaming.
I wonder if Samsung will come out of no where to do this?