I mostly want to focus on the practical / mechanical perspective of this question.
I have thought already many times on buying a small electric motorcycle for daily commute etc but i wouldn't min to have small excursion/trip on it (even on these reduced speeds). What blocks me though is that it has such a limited range and such a big time of recharging that even i decided to take the (heavy and bulky) charger along with me and even i could find a power supply available anywhere, i would need to spend at least 2 hours of charging for every 100km of riding, reducing my average speed from 50km/h(an average small electric motorcycle speed) to a silly 25km/h.
So... if all vehicles manufacturers and batteries manufacturers had a standardized type of batteries (or a few if for some reason voltage cannot be the same in cars and motorcycles) that would fit all vehicles (or at least all vehicles of a given type) and would be modular in a way that a larger car would fit e.g 8 cells and a smaller car 5 cells and a motorcycle 3 cells etc, then if these cells would be produced in massive numbers (rendering them cheaper than normal vehicle batteries) could it be that they would be available in every gas station and/or remotely "desert" charging (via solar cells) stations so that it would be easy for a vehicle to pay and interchange it's empty battery with a full one without having to wait for long period?
These solar cells could be sold separately from the vehicle and thus piping the cost to the final consumer also when going to the charge station you could have your "empty" batteries overall state (age and capacity) examined and upon switching with the "charged" ones a small variance in price could be applied etc.
I can clearly see the financial and political implications of such a model but do you find this case to only belong in Worldbuilding???