As long as states keep regulating "smaller than a car but doesn't fit into any existing category vehicles" the same way they regulate motorcycles (all the insur

As long as states keep regulating "smaller than a car but doesn't fit into any existing category vehicles" the same way they regulate motorcycles (all the insurance licensing and registration stuff you have to put up with for a car possibly plus some) there will be little to no space for them in the market because the people who can afford them will mostly just buy similar price used cars instead because those will deliver better utility, comfort and safety at the same price point. If you want people to try something new at scale you gotta make it worth their while and barring some yet unforeseen technological breakthrough that applies to sub-car sized vehicles but not cars I don't see any way of doing that besides easing regulation on smaller than car vehicles.