Re: Why not just switch the batteries
standardized interchangeable battery packs. The service station would charge them for hours
That just moves the problem, the service stations would need grid connections able to supply the energy for that, which might be feasible for motorway stations but not for ones in towns. Then you have the fire hazard issues of a warehouse full of on-charge aging Li-Ion cells in every service station, getting planning permission for those all over the country might be tricky.
Lastly, how do you cope with the fact that as they age the storage packs lose capacity? Will a garage charge less money for an older pack that doesn't hold as much? Will drivers insist that they only get a newish fully-charged pack?
On the plus side it would be easier for a government to tax, just add 60% fuel tax to each battery pack swap bill. Then it would be no cheaper than petrol/diesel, of course.