Well, I think this is letting perfect be the enemy of good. You could definitely improve the support for these types of vehicles and add incentives to purchases and use. As one example in CA you can’t drive on on roads that have a speed limit higher than like 40 or something. So adjusting speed limits in towns or providing exemptions for city streets’ right lanes or something would go along way with adoption.

I’m not saying you would ban cars, just incentivize using more economical modes of transport. My family of 4 would happily use a golf cart if my community had support for them on city streets.