Think of the times they predict power shortages -- we take the gas pickup. Think of times gas was $5/gallon and there were shortages (IMHO gas is still a bit too high) -- take the EV. We don't have all of our transportation eggs in one basket for the Dims to mess up. And that's long trip driving.
For short trip driving our EV trips don't require us to buy energy from the over-regulated power market because in the south it's good for our home solar. Most of the power that we pull from the grid occurs during the 4 wintery months from November to February. The other 8 months we hardly pull from the grid -- including when we charge our EV for 1,500 miles per month. IMHO being a conservative is more than just voting for the right people and demanding govt be smaller and less intrusive. Being a conservative is looking for ways to reduce how much govt can interfere with our lives. The left has made it clear that they're over-regulating energy, so I chose to make our energy consumption be more from homemade energy (including our driving, since the EV can take advantage of power made from decentralized solar).
No, what you are describing is taking prepping to the max. If you have a solar system that is big enough to take you off-grid, you would be shooting yourself in the foot to not go out and at least buy a 34k Tesla model 3. You would be driving a low-maintenance vehicle for free. And, ignore all that crap about the batteries not lasting. My brother's Tesla is about to roll 200k miles on the same battery.