Price of purchase, price of ownership, price of use, is all a lot lower versus a car.
Protection from rain as well as some traffic protection versus scooters/mopeds/bicycles, as well as speed versus a bike or slow moped, especially at certain times of the day and certain areas.
Also easier to go with two people and to move more luggage or groceries, than on a bike or scooter or moped.
More comfortable, too, e.g. having music on, heating, navigation.
Conveniently, no helmet or motorwear requirements. You can lock things away in your car.
And finally, because they're smaller, electric and have a higher occupancy percentage, congestion, sound, pollution and parking are all improved if more people would use them versus a car. Most 4-6 seater cars have an average occupancy per trip of <2, which means a ton of extra space and weight being moved around, which means more pollution, costs, sound, as well as more congestion and parking issues.
Tiny cars in combination with decent cycling / moped infrastructure, decent public transportation, and a high-tax on personal 4-6 seater cars and SUVs (which still makes economic sense if you actually seat 3-6 people, but don't if you're just sitting alone in your SUV tank) would make the streets safer, less congested, less polluting, less noisy, cheaper and better for the environment.
This model where the norm is to sit in traffic in a giant and heavy ICE car seating 4-6 by yourself, makes no sense. These cars have a place, but only for the niche 15% of trips that actually seat that many. Tiny personal cars, and public larger ridesharing cars, makes more sense.