I read an artical recently about an electric battery that charges almost instantaneously. This was proposed as a big leap for the production of electric vehicles but if spare capacity is greater during the night then should the slow charging batteries stay?

Off-peak rates are lower than peak rates, most people don't drive around at night, but do in the day, so night charging makes sense, but if you are on a long trip it would be nice to be able to re-charge every hour or so, while having a coffee or burger. One to 2 minutes is fast enough, but 15 mins would be OK for a trip if your range was 2-3 hours driving.

I think for long-distance travel battery size should be calibrated to match bladder size. :)

For a family truckster vacation, 15min downtime every 2-3 hours would be fine. I can't imagine having to stop every hour for that long though. For a frequent business traveler, a stop every 4 hours is probably the minimum. I know on a "good" trip I make one stop for gas and food on a 9.5 hour drive, quite routinely.

This isn't to say that memes can't change, but for easy step-in the new solution shouldn't be too painful. Better rail would probably be a better long-term solution -- until then, I think I'd rather rent a gas vehicle and pay the price for longer trips, and leave the EV at home.