Many of us grew up with internal combustion engines, and some of us understand their limitations; fill the tank before you run out of fuel, pullover if the oil light comes, ditto steam from the engine.
Not many are all the way up the learning curve for EVs, which is understandable. A machinist that I worked with 30 years ago was a serious EV fan, converting cars for others, racing them (he had a couple of records). I'm only now starting to catch up.
But we don't all drive F-350s, or Rams, or Silverados. We all made choices about works well for us personally. Why would you expect someone to drive the vehicle if they have a different set of opinions or needs? Not pick on a brand, but there was a dealer in my home town that had terrible service. If you wanted that brand of vehicle, you had to make peace with driving ninety miles to the dealer that their act together.
I own a couple of different vehicles, and I think of them as different strokes for different folks. Some we use to get groceries (short trip, all on electrical power), some I use for hauling up to 1.5T, and trailer 5T, some I can use to trailer 30T. They are built for different purposes, and I use them for different purposes. A know folks who have EVs with 300 mile ranges who happily go on long, multi-day road trips with them.
My car charges from our solar, so in the case of an earthquake or natural disaster, I can actually fuel up at home. That has its advantages sometimes, too. My car doesn't have the range that some other EVs do, and would definitely not be my choice for the vehicle to climb in and drive 250 miles at 15 miles per hour. Then again many internal combustion vehicles are going to have a tough time with that as well, without refueling.
If you need to do a run of 500 miles, I think that you plan ahead, choose your vehicle, and your fueling strategy- no matter what your energy source is.
Being caught in a traffic jam leaving town on the eve of a hurricane is my definition of not planning ahead. Either plan to stay, or get out. Hurricanes aren't earthquakes; you know when they are in the area, even if you don't know for sure how severe it will be.
As an example, we live in earthquake country and wildfire country, and have bug out bags packed always. Cars are kept at least half full of fuel, and we have fuel on hand to top them up if needed. Trucks and trailers are parked for rapid egress. We have food and water cached, just in case. To us, that is just prudent when you live in an area with natural hazards. I would never buy a house in tornado country without a basement or root cellar for similar reasons.
An EV as a bug out vehicle might not be optimal, but then again if you have solar at home, it might not be so bad either. It all depends on your particular needs, and what you are trying to prepare for/insure against. I have seen lots of gas stations closed after earthquakes, and not just for lack of power. I'm not saying all gas stations; some. So, it is a risk factor as well.
I have acquaintances with large generators and propane tanks to survive post-earthquake. Then we had a ten day cold snap and they ran their generator, and they discovered the hard way that the tank wasn't big enough, and forgotten that their propane supplier fills generator tanks only after all the heating needs are taken care of. They had to move out for several weeks. "Plan for your particular emergency"was the moral that I took from that experience.
All the best,
Peter