I have, I love them and there's a reason I don't ride one.
> 80km/h is very much reasonable
80 km/h is a speed at which people still die in modern full-size cars, and those have actual crumple zones and weigh about twice as much as the QQ.
> Nobody wants to drive at 30km/h
Not in a car, but most e-bikes and e-scooters go around 20-25 km/h and they're the mode of transport I was trying to enhance with my imaginary vehicle. I don't want a small car, because small cars have to share normal road infrastructure with big cars, even hellishly big cars (semis). I want a four-wheeled bicycle with a roof and a weak electric motor. I want it to share as much infrastructure as possible with bicycles (while endangering them as little as possible).
As someone who has ridden 125cc scooters a fair bit at that speed the car would probably be much safer than the scooter. At least it won't fall over if you hit a bit of oil on the road.
Have you seen motorbikes?
You can tell me that’s not as safe as a full car, but 80km/h is very much reasonable.
Nobody wants to drive at 30km/h, or else you’d see a lot more golf carts on the road.