This is the case in France & some other EU countries (light quadricycles - Renault, Citroen and so on) and Japan (Kei Cars). The problem seems to be that for m

This is the case in France & some other EU countries (light quadricycles - Renault, Citroen and so on) and Japan (Kei Cars). The problem seems to be that for most people who can legally drive a full-scale car (i.e. they're not too young or too old) getting a do-everything vehicle on finance is more attractive at that point. They're somewhat popular with youngsters in rural areas (cheap to insure, minimum driver age is 14 I think, whereas for cars in France it's 17) and with frailer, older people who can't walk or cycle very far and don't have the stamina for longer drives, they just want an inexpensive little runabout to get to the village shops, nearby friends and appointments. But they're expensive enough (about $10k) that you're unlikely to buy one in addition to your regular do-it-all car, where you might buy an ebike, pedal bike or motorcycle. Maybe as a second vehicle in a childless couple where one partner does almost all the driving, but unless heavier vehicles are highly taxed or restricted (city low emission & congestion zones), there's not enough advantage in one of these for mass adoption.