I’m not sure I’d want to do 45 in that thing, hell of a way to go if you got speed wobbles. I could see a use for kei vehicles in downtown areas. Traffic is so bad that a car’s top speed might be 30 if you are lucky. Mass transit, bikes and tiny vehicles are what most people could easily get away with day to day.
Absolutely, they make up a considerable minority of the cars here. Ebike (and bike) usage has grown considerably over the past decade, and I’m starting to see people in plain clothes and families with small children riding on cargo bikes now, instead of just the hardcore lyrcra people in their mid 40s and 50s.