I really don't get why motorcycles are legal at all - loud, terrible emissions, used for crimes, huge fatality rate, usually driven by a psychopath who loves revving his toy at 5AM at a residential neighbourhood.
This gave me a chuckle. I have absolutely no data but I'm quite certain cars are "used for crimes" at a much higher rate than motorcycles.
Motorcycles are almost all manual, nearly invisible to other drivers, and prone to issues with the smallest of road hazards/obstacles, making them really risky to use as a getaway vehicle seeing as you'd need to be outpacing law enforcement much of the time. Add the adrenaline of "doing a crime" on top of that of high-speed motorcycle riding and you've really got a recipe for disaster in most cases. There was a stolen bike in LA being chased by the cops last month who collided with a car and the rider died. https://www.latimes.com/california/newsletter/2022-01-24/mot...
Maybe being "used for crimes" would be better since you're less likely to actually get away on them!
hence why it wouldn't be legal if invented now (well probably most things won't)
good comparison would be passenger drones - super useful, universally hated, regulated to death.
Good luck getting police to enforce that, though.