While I have a different opinion on climate change overall, I completely agree with the above. But do note that 'something or other' is much more likely to be scorpions and cockroaches than humans. Technologically advanced and all, we are nowhere near as adaptive to circumstances as some other...
Also with the producability focus of the CT, I hope accelerating the rampup will be easier than with the 3. I expect batteries, batteries and batteries will be the deciding factor.