People seem to forget that Japan is not only Kanto and Kansai. I live in Aomori and here everybody needs a car. I have to drive around 500 km per week, and I would really appreciate if my car would have better mileage.
On your use case, you just need to plug in everyday, instead of go to gas station every week. Who often drive above 100km per day is rare in Japan even in rural area.
Well, the only problem is that I don't have where to plug it, but sure, it is feasible. My neighbor drives a Nissan Leaf, and we had a co-worker with a Tesla, so I know it is possible.