I am not sure you followed news last few weeks, as TX is prime example that in time of great crisis, this "end of the days" preppers really do not get far without infrastructure. FL i think has a mandate where gas stations have to have generating capabilities to keep gas stations running in case grid collapses, but as far as I have seen it is not something that is enforced thoroughly.Have you priced a solar array sufficient in size to recharge an EV? Do you recognize that you don't just need solar panels but also the roof or land area, and sufficient battery array and inverter? That's tens of thousands of dollars, unless only talking about a minimal survival level of ability to drive a few miles per day, which isn't realistic because if the whole area is devastated to the point where you can't even get gas, you'll have to drive even further to get needs met besides your vehicle power needs.
If you don't have room to store 50 gallons of gas, how do you have room to store solar charging batteries and inverter, in your garage since that's where the vehicle is? I guess you can spend even more for a high current long run from that to your inverter.
Overall, a very expensive way to solve a problem that does not exist for most in the US driving ICE vehicles, who do not need to store any reserve gas for their vehicles.
This does not mean that there aren't certain circumstances where an EV would be easier to keep powered, rather that it is a much smaller % of owners and at more cost and less convenience until the power infrastructure doesn't just get the token gesture improvements that power companies are talking about, but instead over 10X that.
Of course solar panels are still expensive, though my neighbor with one car garage has whole roof covered with solar panels. In the end it might be bit safer than to have 50 gallons of fuel sitting in garage during disaster event. Both approaches have downside. My point is that without governmental response to a disaster, you as individual, whether you have ICE or EV, is in limbo. All our life depends on infrastructure that is possible to survive only through effort for which multi agency and multi state effort supported by a federal govt. is necessary. This BS how you will be independent for days by individually preparing for hurricane that blows 155mph in houses built by cheapest bidder, is at best laughable. There is higher probability guy in a boat will come to get you than that you will be making it using your ICE powered vehicle. So, EV's are coming, whether you like it or not (I don't), and our society will not be any less vulnerable to disruptions than it is now. So, that is really not something I would look at when making decisions about purchase, or cyber attacks, while all your finances are prone to those attacks. Do you also stash your money in the pillow?