Not sure if it's a great benefit to those of us living in mainland Europe! For sure, one major issue with EVs is that the range simply isn't there. I visit Croatia once every couple of years, and it's just not realistic to do that journey by car if you can't maintain the current speed limits of 130-140km/h. I usually sit at 128/9km/h (80mph) with cruise control, so nothing excessive - but the typical journey (overnight break in Slovenia) involves 8 hour drives each day. I tend to take 30 minute breaks every 2-3 hours, which gives a total travel time of around 9.5-10 hours each day. If an EV meant that the same journey was to take 12 or more hours, it would be a nightmare.
Assuming they you average 80mph then that's about 640 miles a day (probably less, as there's likely to be some lower speed travel, however that will just give you a bit more spare range) assuming a car with a 300 mile range and 35 minutes to charge 100 miles (50kwh charger) that would require 8 hours of driving and about 2.5 hours charging.(2 hours 20 minutes would add about 400 miles, so a total of 700 miles to travel 640).
That leaves the overall journey time at about 10.5 hours, so not much slower than existing.
Even if you reduced your speed to increase the journey time by 30 minutes that would reduce your average speed from 80 to 75, however to get to over 12 hours your average speed would need to fall to below 67mph. Although it's a balance, dose allowing down increase range more than you could gain by charging.
Although it could be that how you drive changes, for instance some may decide to stop somewhere for a prolonged period of time and do something (for instance, as we're on a rail forum, visiting a tourist railway) whilst you charge your car. It may mean leaving a bit earlier and arriving a bit later, however doing a 3 hour drive arriving at 10:30, then leaving at 15:00 to then drive 3 hours to then stop for a meal before driving the last 2 hours arriving at 21:00 would be (for some) a nicer journey than leaving at 9 and arriving at 19:30.
Yes you'd be "out" for over 12 hours a day, however it wouldn't be nearly as stressful as "traveling" for that length of time.
Given that it's something which is done infrequently chances are there would be plenty of scope to find places to visit in that middle of the day slot.
It may not suit everyone, however for some it may be an option which allows then to make it work.
For others it maybe that they look at how much it costs, including an overnight stay, and decide that it's better for them to use public transport (i.e. rail to get there and then local buses when they are there), as 12 hours on a train means that the train only needs to average a little over 100mph and gains them a day each way. It may even be worth hiring a car for some of the time away from home.
Whilst 12 hours on a train on a day may not be to everyone's taste, the extra 2 days of time gained is likely to be attractive to some. In the same way that doing something for part of day each day, rather than wiping out two whole days each way for traveling may well appeal.
Sometimes being forced to reconsider how we do something can mean that it changes for the better.
For instance, my wife and I went to Guernsey for a holiday once. Lots of people fly then hire a car, we didn't. We used the buses and walked a fair amount. We walked bits of the coastal path which we may have just driven to get between two points, we spent about the same on the buses than the fuel that we would have needed (currently each bus trip cost would cost a couple about £1.10 using the smart card, which would need topping up in multiples of £5) let alone the car hire, we did everything that we wanted and we didn't have to stress about getting lost (just asked the driver to let us know when to get off for where we were going). Even things like not needing to worry about where we were going to park (or where we may need to park is the first place was full) or how much it was going to cost (and having the cash to pay for that) was quite a freedom
I don't recall that there was anything that we wanted to do that we couldn't do, even if there was it didn't spoil the holiday.
However it did highlight that sometimes making a change from how things are typically done can be possible and can lead to being able to do things which you might otherwise miss out on doing.